curl --request GET \
  --url https://app.herondata.io/api/end_users/{end_user_id_or_heron_id}/iso_applications \
  --header 'x-api-key: <api-key>'

[
  {
    "created": "2023-11-07T05:31:56Z",
    "end_user_heron_id": "<string>",
    "end_user_id": "<string>",
    "field_validations": [
      {
        "failure_reason": "<string>",
        "field_name": "<string>",
        "result": "passed",
        "validation_type": "<string>"
      }
    ],
    "filename": "iso_app.pdf",
    "heron_id": "iso_6hBjQT9k6KP2rLCXwjUJff",
    "processing_status": "processed",
    "quality_status": "fully_matched",
    "result": {},
    "source_email": {
      "date_sent": "2023-11-07T05:31:56Z",
      "date_sent_string": "<string>",
      "from_address": "<string>",
      "from_address_domain": "<string>",
      "from_name": "<string>",
      "html_body": "<string>",
      "html_or_text_body": "<string>",
      "subject": "<string>",
      "text_body": "<string>"
    }
  }
]