using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Serialization;

using System.Reflection;

​

public class Program

{

    public static void Main()

    {

        var ro1 = new RootObject<Request_1>(){Request = new Request_1()};

        var ro2 = new RootObject<Request_2>(){Request = new Request_2()};

​

        var settings = new JsonSerializerSettings

        {

            ContractResolver = new DynamicPropertyResolver(),

            Formatting = Formatting.Indented

        };

​

        Console.WriteLine(JsonConvert.SerializeObject(ro1, settings));

        Console.WriteLine(JsonConvert.SerializeObject(ro2, settings));

    }

}

public class RootObject<T> where T: new()

{

    public T Request { get; set; }

}

public class Request_1

{

    public int A => 65;

    public string B => "B";

}

public class Request_2

{

    public int X => 88;

    public string Y => "Y";

}

public class DynamicPropertyResolver : DefaultContractResolver

{

    protected override JsonProperty CreateProperty(MemberInfo member, MemberSerialization memberSerialization)

    {

        var property = base.CreateProperty(member, memberSerialization);

​

        if("Request".Equals(property.PropertyName))

            property.PropertyName = property.PropertyType.Name;

​

        return property;

    }

}

​

​