curl --request POST \
  --url https://api.example.com/v2/documents/ \
  --header 'Content-Type: multipart/form-data' \
  --form 'name=<string>' \
  --form source=0 \
  --form template=123 \
  --form type=html \
  --form 'content_type=<string>' \
  --form object_id=123 \
  --form regenerate=false \
  --form resign=false \
  --form 'file=<string>'

{
  "id": 123,
  "uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "created_by": 123,
  "signed": true,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "files": [
    {
      "id": 123,
      "file": "<string>",
      "type": 0,
      "extra": "<unknown>"
    }
  ],
  "signs": [
    {
      "id": 123,
      "uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "signer": {
        "id": 123,
        "name": "<string>",
        "phone": "<string>",
        "email": "jsmith@example.com",
        "type": "company",
        "outer_id": 0
      },
      "created_at": "2023-11-07T05:31:56Z",
      "updated_at": "2023-11-07T05:31:56Z",
      "stages": [
        {
          "id": 123,
          "status_from": 0,
          "status_to": 0,
          "created_at": "2023-11-07T05:31:56Z",
          "meta": "<unknown>"
        }
      ],
      "method": 0,
      "method_allowed": [
        16383
      ],
      "status": 0
    }
  ],
  "name": "<string>",
  "source": 0,
  "template": 123,
  "type": "html",
  "content_type": "<string>",
  "object_id": 123,
  "regenerate": false,
  "resign": false
}