curl --request POST \
  --url https://restapi.sign.plus/v2/envelopes \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "search": "<string>",
  "tags": [
    "<string>"
  ],
  "comment": "<string>",
  "ids": [
    "<string>"
  ],
  "statuses": [
    "DRAFT"
  ],
  "folder_ids": [
    "<string>"
  ],
  "only_root_folder": true,
  "date_from": 123,
  "date_to": 123,
  "uid": "<string>",
  "first": 123,
  "last": 123,
  "after": "<string>",
  "before": "<string>",
  "order_field": "CREATION_DATE",
  "ascending": true,
  "include_trash": true
}
'

{
  "has_next_page": true,
  "has_previous_page": true,
  "envelopes": [
    {
      "id": "<string>",
      "name": "<string>",
      "comment": "<string>",
      "pages": 123,
      "flow_type": "REQUEST_SIGNATURE",
      "legality_level": "SES",
      "status": "DRAFT",
      "created_at": 123,
      "updated_at": 123,
      "expires_at": 123,
      "num_recipients": 123,
      "is_duplicable": true,
      "signing_steps": [
        {
          "recipients": [
            {
              "name": "<string>",
              "email": "<string>",
              "role": "SIGNER",
              "id": "<string>",
              "uid": "<string>",
              "verification": {
                "type": "SMS",
                "value": "<string>"
              }
            }
          ]
        }
      ],
      "documents": [
        {
          "id": "<string>",
          "name": "<string>",
          "filename": "<string>",
          "page_count": 123,
          "pages": [
            {
              "width": 123,
              "height": 123
            }
          ]
        }
      ],
      "notification": {
        "subject": "<string>",
        "message": "<string>",
        "reminder_interval": 123
      },
      "attachments": {
        "settings": {
          "visible_to_recipients": true
        },
        "recipients": [
          {
            "recipient_id": "<string>",
            "recipient_name": "<string>",
            "placeholders": [
              {
                "recipient_id": "<string>",
                "id": "<string>",
                "name": "<string>",
                "hint": "<string>",
                "required": true,
                "multiple": true,
                "files": [
                  {
                    "id": "<string>",
                    "name": "<string>",
                    "size": 123,
                    "mimetype": "<string>"
                  }
                ]
              }
            ]
          }
        ]
      }
    }
  ]
}