using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Bson;

using Newtonsoft.Json.Converters    ;   

using Newtonsoft.Json.Serialization;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Schema;

public class Program

{

    public static void Main()

    {

        var j = @"{{

        ""payload"": {

            ""firstName"": ""John"",

       ""lastName"": ""Doe""

    }

    }}";

JObject.Parse(j);

    }

}