using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        Foo foo = new Foo { Data = new byte[] { 0x00, 0x00, 0x00, 0x01, 0x08, 0x02, 0x59, 0x51 } };

        //00 00 00 01 08 02 59 51   00 00 91 49

        string json = JsonConvert.SerializeObject(foo);

        Console.WriteLine(json); 

        Console.WriteLine();

        Foo fah = JsonConvert.DeserializeObject<Foo>(json);

        DumpBytes(fah.Data);

    }

    private static void DumpBytes(byte[] b)

    {

        for (int i = 0; i < b.Length; i++)

        {

            int c = b[i];

            Console.Write(c.ToString("X2") + " ");

        }

        Console.WriteLine();

    }

}

​

public class Foo

{

    public byte[] Data { get; set; }    

}

​