using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        string json = "\"{\\\"iccid\\\":\\\"8500000000000000005\\\",\\\"msisdn\\\":\\\"4485000000005\\\",\\\"comment\\\":null,\\\"lastSessionStart\\\":1480120318000,\\\"lastSessionEnd\\\":1480120456000,\\\"simStatus\\\":\\\"Live\\\",\\\"activated\\\":true,\\\"enabled\\\":true,\\\"connected\\\":false,\\\"usage\\\":73728}\"";

        Console.WriteLine("Original string: " + json);

        Console.WriteLine();

        //json = json.Replace("\\\"", "");    // Don't do this - it will make the JSON invalid  (uncomment if you want to see the error)

        string unescapedJson = JsonConvert.DeserializeObject<string>(json);

        Console.WriteLine("Unescaped JSON: " + unescapedJson);

        Console.WriteLine();

        Console.WriteLine("----- Deserialized data: -----");

        Data data = JsonConvert.DeserializeObject<Data>(unescapedJson);

        Console.WriteLine("iccid: " + data.iccid);

        Console.WriteLine("msisdn: " + data.msisdn);

        Console.WriteLine("comment: " + data.comment);

        Console.WriteLine("lastSessionStart: " + data.lastSessionStart);

        Console.WriteLine("lastSessionEnd: " + data.lastSessionEnd);

        Console.WriteLine("simStatus: " + data.simStatus);

        Console.WriteLine("activated: " + data.activated);

        Console.WriteLine("enabled: " + data.enabled);

        Console.WriteLine("connected: " + data.connected);

        Console.WriteLine("usage: " + data.usage);

    }

}

​

​

class Data

{

    public string iccid { get; set; }

    public string msisdn { get; set; }

    public string comment { get; set; }

    public long lastSessionStart { get; set; }

    public long lastSessionEnd { get; set; }

    public string simStatus { get; set; }

    public bool activated { get; set; }

    public bool enabled { get; set; }

    public bool connected { get; set; }

    public int usage { get; set; }

}

​