using System;

using System.Linq;

using System.Reflection;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        var data = new Metadata { Name = "MyName", Id = Guid.NewGuid() };

        var json = JsonConvert.SerializeObject(data, Formatting.Indented, new MetadataConverter());

        Console.WriteLine(json);

    }

​

}

​

public class Metadata

{

    public string Name { get; set; }

    public Guid Id { get; set; }

}

​

​

class MetadataConverter : JsonConverter

{

    public override bool CanConvert(Type objectType)

    {

        return (objectType == typeof(Metadata));

    }

    public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)

    {

        JArray array = new JArray();

        foreach (PropertyInfo pi in value.GetType().GetProperties().Where(p => p.CanRead))

        {

            array.Add(new JObject(new JProperty(pi.Name, pi.GetValue(value, null))));

        }

        JObject obj = new JObject(new JProperty("td", array));

        obj.WriteTo(writer);

    }

    public override bool CanRead

    {

        get { return false; }

    }

    public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)

    {

        throw new NotImplementedException();

    }

}

​