using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var person=new {age=27, name=new{fn="Ivan", ln="Ivanov", mn="Ivanovich"}};

        Console.WriteLine(JsonConvert.SerializeObject(new {person}));

        Console.WriteLine(JsonConvert.SerializeObject(new {jsonResult = person}));

    }

}