curl --request POST \
  --url https://api.firma.dev/functions/v1/signing-request-api/documents \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Sales Agreement 2024",
  "recipients": [
    {
      "name": "John Doe",
      "email": "john@example.com"
    }
  ]
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "name": "<string>",
  "description": "<string>",
  "status": "draft",
  "document_url": "<string>",
  "page_count": 2,
  "expiration_hours": 168,
  "template_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "settings": {
    "allow_download": true,
    "attach_pdf_on_finish": true,
    "allow_editing_before_sending": false,
    "use_signing_order": false,
    "hand_drawn_only": false,
    "send_signing_email": true,
    "send_finish_email": true,
    "send_expiration_email": true,
    "send_cancellation_email": true,
    "require_otp_verification": null
  },
  "created_date": "2023-11-07T05:31:56Z",
  "updated_date": "2023-11-07T05:31:56Z",
  "sent_date": "2023-11-07T05:31:56Z",
  "finished_date": "2023-11-07T05:31:56Z",
  "cancelled_date": "2023-11-07T05:31:56Z",
  "recipients": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "first_name": "<string>",
      "last_name": "<string>",
      "name": "<string>",
      "email": "jsmith@example.com",
      "designation": "Signer",
      "order": 2,
      "phone_number": "<string>",
      "street_address": "<string>",
      "city": "<string>",
      "state_province": "<string>",
      "postal_code": "<string>",
      "country": "<string>",
      "title": "<string>",
      "company": "<string>",
      "custom_fields": {},
      "finished_date": "2023-11-07T05:31:56Z"
    }
  ],
  "fields": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "type": "text",
      "recipient_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "page_number": 2,
      "x_position": 123,
      "y_position": 123,
      "width": 123,
      "height": 123,
      "required": true,
      "read_only": true,
      "read_only_value": "<string>",
      "variable_name": "<string>",
      "dropdown_options": [
        "<string>"
      ],
      "format_rules": {},
      "validation_rules": {},
      "date_signing_default": true,
      "final_value": "<string>"
    }
  ],
  "warnings": [
    "<string>"
  ]
}