by

// wzór z janusza

stri{
    "Captcha" : "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mP4z8BQDwAEgAF/posBPQAAAABJRU5ErkJggg==",
    "Questions": [
        "Pytanie 1",
        "Pytanie 2"
    ],
    "RegistrationId": "asd675fdg",
    "Inputs" : [],
    "User" :  {
        "FirstName" : "",
        "LastName":  "",
        "Email":  "",
        "PhoneNumber" : ""
    }
}


///model usera

using System.Collections.Generic;

namespace Toci.Pentagram.Logic.Models
{
    public class UserModel
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }

        public string Email { get; set; }
        public string PhoneNumber { get; set; }

        public List<RegistrationTask> RegistrationTasks { get; set; }
    }

}


///model Registration Task

using System.Collections.Generic;

namespace Toci.Pentagram.Logic.Models
{
    public class RegistrationTask
    {
        public string Captcha { get; set; }
        public List<string> Questions { get; set; }
        public string RegistrationId { get; set; }
        public List<string> Inputs { get; set; }
    }
}