curl --request PUT \
  --url https://api.simplicity.ai/v1/documents/{document_id} \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '
{
  "original_filename": "<string>",
  "metadata": {
    "title": "<string>",
    "keywords": [
      "<string>"
    ]
  }
}
'

{
  "form_id": "<string>",
  "form_name": "<string>",
  "original_form_name": "<string>",
  "updated_at": "2023-11-07T05:31:56Z",
  "created_at": "2023-11-07T05:31:56Z",
  "form_description": "<string>",
  "form_title": "<string>",
  "form_url": "<string>",
  "last_filled_at": "2023-11-07T05:31:56Z",
  "file_size": 123,
  "fillable_field_count": 123,
  "source_document_details": [
    {
      "file_key": "<string>",
      "external_document_id": "<string>",
      "document_id": "<string>",
      "extension": "<string>",
      "original_filename": "<string>",
      "metadata": {},
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z"
    }
  ]
}