       Boulder-Requester:       - '000000'       Link:       - <https://acme-staging.api.letsencrypt.org/acme/authz/ctY0Ec0RD0-PXKZ0GGHUzE0KZa0ZK0qMttqrcrvC0eA>;rel="up"       Location:       - https://acme-staging.api.letsencrypt.org/acme/challenge/ctY0Ec0RD0-PXKZ0GGHUzE0KZa0ZK0qMttqrcrvC0eA/00000000     