task: metadata: install: pip install -e .
patch: diff --git a/google/cloud/storage/client.py b/google/cloud/storage/client.py
index d72149f..1a77115 100644
--- a/google/cloud/storage/client.py
+++ b/google/cloud/storage/client.py
@@ -947,6 +947,7 @@ class Client(ClientWithProject):
             email=credentials.signer_email, datestamp=datestamp
         )
         required_conditions = [
+            {"bucket": bucket_name},
             {"key": blob_name},
             {"x-goog-date": timestamp},
             {"x-goog-credential": x_goog_credential},

problem_statement: Storage Update Conformance Tests
The Storage library support for Post Policy V4 has a security risk that is addressed in the latest PR to Storage conformance tests: googleapis/conformance-tests#31

The fix is to add {\"bucket\":\"bucket-name\"} to Post Policy V4 policy which is then signed.

Here's an example solution in Ruby: googleapis/google-cloud-ruby#5702

repo: googleapis/python-storage
test_cmd: pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
test_patch: diff --git a/tests/unit/test_client.py b/tests/unit/test_client.py
index c3a3935..7acba35 100644
--- a/tests/unit/test_client.py
+++ b/tests/unit/test_client.py
@@ -1501,7 +1501,7 @@ class TestClient(unittest.TestCase):
         BUCKET_NAME = "bucket-name"
         BLOB_NAME = "object-name"
         EXPECTED_SIGN = "5369676e61747572655f6279746573"
-        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsia2V5Ijoib2JqZWN0LW5hbWUifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAzMTJUMTE0NzE2WiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0QG1haWwuY29tLzIwMjAwMzEyL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDMtMjZUMDA6MDA6MTBaIn0="
+        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsiYnVja2V0IjoiYnVja2V0LW5hbWUifSx7ImtleSI6Im9iamVjdC1uYW1lIn0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMzEyVDExNDcxNloifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdEBtYWlsLmNvbS8yMDIwMDMxMi9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAzLTI2VDAwOjAwOjEwWiJ9"
 
         client = self._make_one(project="PROJECT")
 
@@ -1539,7 +1539,7 @@ class TestClient(unittest.TestCase):
         BUCKET_NAME = "bucket-name"
         BLOB_NAME = "object-name"
         EXPECTED_SIGN = "5369676e61747572655f6279746573"
-        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsia2V5Ijoib2JqZWN0LW5hbWUifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAzMTJUMTE0NzE2WiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0QG1haWwuY29tLzIwMjAwMzEyL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDMtMjZUMDA6MDA6MTBaIn0="
+        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsiYnVja2V0IjoiYnVja2V0LW5hbWUifSx7ImtleSI6Im9iamVjdC1uYW1lIn0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMzEyVDExNDcxNloifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdEBtYWlsLmNvbS8yMDIwMDMxMi9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAzLTI2VDAwOjAwOjEwWiJ9"
 
         client = self._make_one(
             project="PROJECT", credentials=_create_signing_credentials()
@@ -1579,7 +1579,7 @@ class TestClient(unittest.TestCase):
         BLOB_NAME = "object-name"
         FIELD1_VALUE = "Value1"
         EXPECTED_SIGN = "5369676e61747572655f6279746573"
-        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsiZmllbGQxIjoiVmFsdWUxIn0seyJrZXkiOiJvYmplY3QtbmFtZSJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDMxMlQxMTQ3MTZaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3RAbWFpbC5jb20vMjAyMDAzMTIvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMy0yNlQwMDowMDoxMFoifQ=="
+        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsiZmllbGQxIjoiVmFsdWUxIn0seyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsia2V5Ijoib2JqZWN0LW5hbWUifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAzMTJUMTE0NzE2WiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0QG1haWwuY29tLzIwMjAwMzEyL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDMtMjZUMDA6MDA6MTBaIn0="
 
         client = self._make_one(project="PROJECT")
 
@@ -1669,7 +1669,7 @@ class TestClient(unittest.TestCase):
 
     def test_get_signed_policy_v4_no_expiration(self):
         BUCKET_NAME = "bucket-name"
-        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJrZXkiOiJvYmplY3QtbmFtZSJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDMxMlQxMTQ3MTZaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3RAbWFpbC5jb20vMjAyMDAzMTIvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMy0yNlQwMDowMDoxMFoifQ=="
+        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsia2V5Ijoib2JqZWN0LW5hbWUifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAzMTJUMTE0NzE2WiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0QG1haWwuY29tLzIwMjAwMzEyL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDMtMjZUMDA6MDA6MTBaIn0="
 
         client = self._make_one(project="PROJECT")
 
@@ -1693,7 +1693,7 @@ class TestClient(unittest.TestCase):
         BUCKET_NAME = "bucket-name"
         BLOB_NAME = "object-name"
         EXPECTED_SIGN = "0c4003044105"
-        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsia2V5Ijoib2JqZWN0LW5hbWUifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAzMTJUMTE0NzE2WiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0QG1haWwuY29tLzIwMjAwMzEyL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDMtMjZUMDA6MDA6MTBaIn0="
+        EXPECTED_POLICY = b"eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJidWNrZXQtbmFtZSJ9LHsiYWNsIjoicHJpdmF0ZSJ9LFsic3RhcnRzLXdpdGgiLCIkQ29udGVudC1UeXBlIiwidGV4dC9wbGFpbiJdLHsiYnVja2V0IjoiYnVja2V0LW5hbWUifSx7ImtleSI6Im9iamVjdC1uYW1lIn0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMzEyVDExNDcxNloifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdEBtYWlsLmNvbS8yMDIwMDMxMi9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAzLTI2VDAwOjAwOjEwWiJ9"
 
         client = self._make_one(project="PROJECT")
 
diff --git a/tests/unit/url_signer_v4_test_data.json b/tests/unit/url_signer_v4_test_data.json
index ff39c18..fd054d8 100644
--- a/tests/unit/url_signer_v4_test_data.json
+++ b/tests/unit/url_signer_v4_test_data.json
@@ -203,10 +203,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJrZXkiOiJ0ZXN0LW9iamVjdCJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
+                    "x-goog-signature": "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",
+                    "policy": "eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJyc2Fwb3N0dGVzdC0xNTc5OTAyNjcwLWgzcTd3dm9kam9yNmJjN3kifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"bucket\":\"rsaposttest-1579902670-h3q7wvodjor6bc7y\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -227,10 +227,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJrZXkiOiJ0ZXN0LW9iamVjdCJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
+                    "x-goog-signature": "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",
+                    "policy": "eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJyc2Fwb3N0dGVzdC0xNTc5OTAyNjcwLWgzcTd3dm9kam9yNmJjN3kifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"bucket\":\"rsaposttest-1579902670-h3q7wvodjor6bc7y\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -252,10 +252,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "2821a23ca8886ae9e9d67e8c094c06626a733f373cdca76d9d8c325e60ed8237b500b2f39937a15a1ebbdef7ed156fe3f41bc3456d453bb68d6755872eb429c329ae4e0dfb5e0abef4ca976394430ad7b3d1f14e50f6040c2cf81a2880980c26f9aeb800a674fc834b0e21e414adc3d1a0835da64107cce6a14bd2b39b4d6627029f821009e15ff3a7538ddc27dcf8c189ed197d25d50f0bddf58f99e0265adf562fff7f6689faba60920d73e6a6704c3d2be34a424766398396c55d3680f8dfd19513e2861fa4efa7ae99001877f043567132d413dc3c69e04a7ef5d30a325c2f9bc64e19dd6f0576781e546383378e7a4f2904411ee32d5c5a763683333dd7",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJrZXkiOiJ0ZXN0LW9iamVjdCJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
+                    "x-goog-signature": "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",
+                    "policy": "eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJyc2Fwb3N0dGVzdC0xNTc5OTAyNjcwLWgzcTd3dm9kam9yNmJjN3kifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"bucket\":\"rsaposttest-1579902670-h3q7wvodjor6bc7y\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -277,10 +277,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJrZXkiOiJ0ZXN0LW9iamVjdCJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
+                    "x-goog-signature": "9eb947e08891be62a6c26d214c5b639506a57c20e1242a135dce45326a821aa9d8eaf5a8b6961a7ba87ab4da09668eb303b615dabdd6344970a024d4697aa3c467ec527cb8318d6c971782c6f82555c8cdd791589226962f0c26d5c415bf9d257cf9ed266a43e1b74891c35f009be741cef42a1eec150ffa5783de217e3704e8f278209250423f62c57864c50c6e525e6e9b724fcafc3844898c6a219effedfaf1204cb95eb135f63307db86726b8d6c12b8a75df61f93143b5e798acdffee0b5ad481075fa89a9d49a470cea339e5e43b61a0d87ef54f355dc401a659b583e7906c20bf84b8da7941d2e932acab21ffe92416985262fe772a117483b6e70410",
+                    "policy": "eyJjb25kaXRpb25zIjpbeyJidWNrZXQiOiJyc2Fwb3N0dGVzdC0xNTc5OTAyNjcwLWgzcTd3dm9kam9yNmJjN3kifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"bucket\":\"rsaposttest-1579902670-h3q7wvodjor6bc7y\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -306,10 +306,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbWyJzdGFydHMtd2l0aCIsIiRhY2wiLCJwdWJsaWMiXSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
+                    "x-goog-signature": "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",
+                    "policy": "eyJjb25kaXRpb25zIjpbWyJzdGFydHMtd2l0aCIsIiRhY2wiLCJwdWJsaWMiXSx7ImJ1Y2tldCI6InJzYXBvc3R0ZXN0LTE1Nzk5MDI2NjIteDJrZDdrandoMnc1aXpjdyJ9LHsia2V5IjoidGVzdC1vYmplY3QifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAxMjNUMDQzNTMwWiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0LWlhbS1jcmVkZW50aWFsc0BkdW1teS1wcm9qZWN0LWlkLmlhbS5nc2VydmljZWFjY291bnQuY29tLzIwMjAwMTIzL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDEtMjNUMDQ6MzU6NDBaIn0="
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[[\"starts-with\",\"$acl\",\"public\"],{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[[\"starts-with\",\"$acl\",\"public\"],{\"bucket\":\"rsaposttest-1579902662-x2kd7kjwh2w5izcw\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -335,10 +335,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "26a8a68997592a5bbd52c8e429ad1687db87aea9fa3ac6fcf4ff7d4526a46b5baf081e6baf5bb028bdddd260f1fcb04d12b0431587e5136815d377dbf62405ab19a6434ddf82b46cddf23e03c7e42613964fffbb70ec5a7d9878191c62fa3b3cdce2e3d3b55a47496c366161ddc24a80199678fe6c90e732fa0803024e9d9c4fada45a06608184420a4e6a0d97faff3cad30ce1956ea5416d9df41cf3b3911fec4a416248478a9557fa527a0ee732adf22d2b87de7f34d49dd9ecd4a4eca8aadd5eb7207c0fe71215fdfd2b4341c58146206e66c908f2c3922e45e4a84da4e0f9b2cfa102f498605b2ec71646c24355f524ae5e14ff4fcd36dd81a6c95c52e55",
-                    "policy": "eyJjb25kaXRpb25zIjpbWyJjb250ZW50LWxlbmd0aC1yYW5nZSIsMjQ2LDI2Nl0seyJrZXkiOiJ0ZXN0LW9iamVjdCJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
+                    "x-goog-signature": "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",
+                    "policy": "eyJjb25kaXRpb25zIjpbWyJjb250ZW50LWxlbmd0aC1yYW5nZSIsMjQ2LDI2Nl0seyJidWNrZXQiOiJyc2Fwb3N0dGVzdC0xNTc5OTAyNjcyLWxwZDQ3aW9nbjZoeDRzbGUifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[[\"content-length-range\",246,266],{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[[\"content-length-range\",246,266],{\"bucket\":\"rsaposttest-1579902672-lpd47iogn6hx4sle\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -364,10 +364,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJhY2wiOiJwdWJsaWMtcmVhZCJ9LHsiY2FjaGUtY29udHJvbCI6InB1YmxpYyxtYXgtYWdlPTg2NDAwIn0seyJrZXkiOiJ0ZXN0LW9iamVjdCJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
+                    "x-goog-signature": "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",
+                    "policy": "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"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"acl\":\"public-read\"},{\"cache-control\":\"public,max-age=86400\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"acl\":\"public-read\"},{\"cache-control\":\"public,max-age=86400\"},{\"bucket\":\"rsaposttest-1579902669-nwk5s7vvfjgdjs62\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -391,10 +391,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJzdWNjZXNzX2FjdGlvbl9zdGF0dXMiOiIyMDAifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
+                    "x-goog-signature": "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",
+                    "policy": "eyJjb25kaXRpb25zIjpbeyJzdWNjZXNzX2FjdGlvbl9zdGF0dXMiOiIyMDAifSx7ImJ1Y2tldCI6InJzYXBvc3R0ZXN0LTE1Nzk5MDI2NzgtcHQ1eW1zNTVqNDdyNnF5NCJ9LHsia2V5IjoidGVzdC1vYmplY3QifSx7IngtZ29vZy1kYXRlIjoiMjAyMDAxMjNUMDQzNTMwWiJ9LHsieC1nb29nLWNyZWRlbnRpYWwiOiJ0ZXN0LWlhbS1jcmVkZW50aWFsc0BkdW1teS1wcm9qZWN0LWlkLmlhbS5nc2VydmljZWFjY291bnQuY29tLzIwMjAwMTIzL2F1dG8vc3RvcmFnZS9nb29nNF9yZXF1ZXN0In0seyJ4LWdvb2ctYWxnb3JpdGhtIjoiR09PRzQtUlNBLVNIQTI1NiJ9XSwiZXhwaXJhdGlvbiI6IjIwMjAtMDEtMjNUMDQ6MzU6NDBaIn0="
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"success_action_status\":\"200\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"success_action_status\":\"200\"},{\"bucket\":\"rsaposttest-1579902678-pt5yms55j47r6qy4\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -418,10 +418,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJzdWNjZXNzX2FjdGlvbl9yZWRpcmVjdCI6Imh0dHA6Ly93d3cuZ29vZ2xlLmNvbS8ifSx7ImtleSI6InRlc3Qtb2JqZWN0In0seyJ4LWdvb2ctZGF0ZSI6IjIwMjAwMTIzVDA0MzUzMFoifSx7IngtZ29vZy1jcmVkZW50aWFsIjoidGVzdC1pYW0tY3JlZGVudGlhbHNAZHVtbXktcHJvamVjdC1pZC5pYW0uZ3NlcnZpY2VhY2NvdW50LmNvbS8yMDIwMDEyMy9hdXRvL3N0b3JhZ2UvZ29vZzRfcmVxdWVzdCJ9LHsieC1nb29nLWFsZ29yaXRobSI6IkdPT0c0LVJTQS1TSEEyNTYifV0sImV4cGlyYXRpb24iOiIyMDIwLTAxLTIzVDA0OjM1OjQwWiJ9"
+                    "x-goog-signature": "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",
+                    "policy": "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"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"success_action_redirect\":\"http://www.google.com/\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"success_action_redirect\":\"http://www.google.com/\"},{\"bucket\":\"rsaposttest-1579902671-6ldm6caw4se52vrx\"},{\"key\":\"test-object\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         },
 
@@ -447,10 +447,10 @@
                     "x-goog-algorithm": "GOOG4-RSA-SHA256",
                     "x-goog-credential": "test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request",
                     "x-goog-date": "20200123T043530Z",
-                    "x-goog-signature": "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",
-                    "policy": "eyJjb25kaXRpb25zIjpbeyJzdWNjZXNzX2FjdGlvbl9yZWRpcmVjdCI6Imh0dHA6Ly93d3cuZ29vZ2xlLmNvbS8ifSx7IngtZ29vZy1tZXRhLWN1c3RvbS0xIjoiJHRlc3Qtb2JqZWN0LVx1MDBlOS1tZXRhZGF0YSJ9LHsia2V5IjoiJHRlc3Qtb2JqZWN0LVx1MDBlOSJ9LHsieC1nb29nLWRhdGUiOiIyMDIwMDEyM1QwNDM1MzBaIn0seyJ4LWdvb2ctY3JlZGVudGlhbCI6InRlc3QtaWFtLWNyZWRlbnRpYWxzQGR1bW15LXByb2plY3QtaWQuaWFtLmdzZXJ2aWNlYWNjb3VudC5jb20vMjAyMDAxMjMvYXV0by9zdG9yYWdlL2dvb2c0X3JlcXVlc3QifSx7IngtZ29vZy1hbGdvcml0aG0iOiJHT09HNC1SU0EtU0hBMjU2In1dLCJleHBpcmF0aW9uIjoiMjAyMC0wMS0yM1QwNDozNTo0MFoifQ=="
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+                    "policy": "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"
                 },
-                "expectedDecodedPolicy": "{\"conditions\":[{\"success_action_redirect\":\"http://www.google.com/\"},{\"x-goog-meta-custom-1\":\"$test-object-\u00e9-metadata\"},{\"key\":\"$test-object-\u00e9\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
+                "expectedDecodedPolicy": "{\"conditions\":[{\"success_action_redirect\":\"http://www.google.com/\"},{\"x-goog-meta-custom-1\":\"$test-object-\u00e9-metadata\"},{\"bucket\":\"rsaposttest-1579902671-6ldm6caw4se52vrx\"},{\"key\":\"$test-object-\u00e9\"},{\"x-goog-date\":\"20200123T043530Z\"},{\"x-goog-credential\":\"test-iam-credentials@dummy-project-id.iam.gserviceaccount.com/20200123/auto/storage/goog4_request\"},{\"x-goog-algorithm\":\"GOOG4-RSA-SHA256\"}],\"expiration\":\"2020-01-23T04:35:40Z\"}"
             }
         }
     ]