using System;

using Newtonsoft.Json;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        string response = "{ \"multicast_id\": 6847210640445644406,  \"success\": 1,  \"failure\": 0,  \"canonical_ids\": 0,  \"results\": [{  \"message_id\": \"0:1540898546437583%dadf2158f9fd7ecd\" }]}";

        SingleResponse singleResponse = JsonConvert.DeserializeObject<SingleResponse>(response);

        foreach(Result res in singleResponse.Results)

        {

            Console.WriteLine(res.Message_id);

        }

    }

}

​

public class SingleResponse

{

    public string Multicast_id { get; set; }

    public byte Success { get; set; }

    public byte Failure { get; set; }

    public ICollection<Result> Results { get; set; }

​

}

​

public class Result

{

    public string Message_id { get; set; }

}