using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var someClass = new SomeClass();

        someClass.Name = "Some Name";

        someClass.Id = 1;

        someClass.Likes.Add("Long Walks on the beach");

        someClass.Likes.Add("Singing in the rain");

        Console.WriteLine(JsonConvert.SerializeObject(someClass));

    }

    public class SomeClass

    {

        public string Name {get;set;}

        public int Id {get;set;}

        public List<string> Likes {get;set;}

        public SomeClass()

        {

            Likes = new List<string>();

        }

    }

}