Form Validation Error (422)

{
   "message":"The given data was invalid", // general error message
   "errors":{ // error messages about specific form fields that were submitted
      "from":[
         "Sender's e-mail address must be a valid email address."
      ],
      "username":[
         "The username field is required."
      ]
   }
}
// complete error message should be
The given data was invalid. Sender's e-mail address must be a valid email address. The username field is required.