Task: Send new Clockify invoice to Notion database

n8n workflow JSON:
{"meta":{"instanceId":"237600ca44303ce91fa31ee72babcdc8493f55ee2c0e8aa2b78b3b4ce6f70bd9"},"nodes":[{"id":"cc514d10-89cc-4fcf-8c1f-b65395cd168a","name":"On new invoice in Clockify","type":"n8n-nodes-base.webhook","position":[460,460],"webhookId":"8af31ab8-e16a-4401-84b7-b246c65ba6a9","parameters":{"path":"8af31ab8-e16a-4401-84b7-b246c65ba6a9","options":{},"httpMethod":"POST"},"typeVersion":1},{"id":"ef9e5ce6-cb3e-4cb9-b33d-3b05a2ab589d","name":"Create database page","type":"n8n-nodes-base.notion","position":[680,460],"parameters":{"title":"={{ $json[\"body\"][\"number\"] }}","resource":"databasePage","databaseId":"ea3219a7-0a1a-4792-8dd6-ab450204dc06","propertiesUi":{"propertyValues":[{"key":"Issue date|date","date":"={{ $json[\"body\"][\"issuedDate\"] }}"},{"key":"Due date|date","date":"={{ $json[\"body\"][\"dueDate\"] }}"},{"key":"Amount|number","numberValue":"={{ $json[\"body\"][\"amount\"] }}"}]}},"credentials":{"notionApi":{"id":"9","name":"[UPDATE ME]"}},"typeVersion":2},{"id":"e2ecb86f-2f0c-4fe7-8919-e9095abdb5a0","name":"Note","type":"n8n-nodes-base.stickyNote","position":[-60,240],"parameters":{"width":462,"height":595,"content":"## Send new Clockify invoice to Notion database\n### How it works\n1. `On new invoice in Clockify` webhook node will trigger when a new invoice is created in Clockify. Setup is involved.\n2. `Create database page` Notion node will create a database page with the information specified from the Clockify trigger. You can add additional fields if required by following the setup.\n\n### Setup\n1. Create a Clockify webhook by going to the [webhooks section in Clockify](https://app.clockify.me/webhooks).\n2. Create the webhook specifying the \"Invoice created\" event and paste in the URL provided from `On new invoice in Clockify` webhook step.\n3. Now go to Notion and create a new database where we will store our Clockify invoices.\n4. In the new Notion database, create the following fields:\n    - Invoice number (renamed from \"Name\" field)\n    - Issue date (date field)\n    - Due date (date field)\n    - Amount (number field)\n5. If you want to add more fields to Notion, create those fields in Notion and map it accordingly in `Create database page` node."},"typeVersion":1}],"connections":{"On new invoice in Clockify":{"main":[[{"node":"Create database page","type":"main","index":0}]]}}}