curl --request POST \
  --url https://api.openregisters.com/v1/documents/search_async/{document_type} \
  --header 'X-API-Key: <api-key>'

{
  "task_id": "<string>",
  "org_id": "<string>",
  "task_status": "pending",
  "result": {
    "http_url": "<string>",
    "content_type": "<string>",
    "original_filename": "<string>",
    "file_type": "<string>",
    "file_hash": "<string>",
    "error": "<string>",
    "s3_uri": "<string>"
  }
}