using System;

​

using Newtonsoft.Json;

​

public class McDataModel

{

    [JsonProperty("submit")]

    public string ActionType { get; set; }

}

​

public class AvpDataModel

{

    public string Submit { get; set; }

}

​

public class Program

{

    public static void Main()

    {

        var serialised = Newtonsoft.Json.JsonConvert.SerializeObject(new McDataModel(){ ActionType = "buy" });

        Console.WriteLine("Serialised: " + serialised);

​

        var deserialised = Newtonsoft.Json.JsonConvert.DeserializeObject<AvpDataModel>(serialised);

        Console.WriteLine("Serialised: " + deserialised.Submit);

    }

}