anchor.diff:                  "completed": true,
                   "download_url": "http://..../request-10.zip"
               }
  +
  ++ Response 500 (application/json)
  +
  +        {
  +            "code": 500,
  +            "message": "User key is invalid.",
  +            "data": null
  +        }
  +
  ++ Response 404 (application/json)
  +
  +        {
  +            "code": 404,
  +            "message": "Invalid template id.",
  +            "data": null
  +        }
  
positive.code: API allows you to generate multiple docx documents using specified template and data
  
  # Generation
  ## Requests [/api/request]
  ### Create request [POST]
  
  
negative.code:     + key (string, required) - User API key.
      + id (number, required) - ID of request
  
  ### Request details [GET]
  
  + Response 200 (application/json)
  
  