hermes-socket-library/Socket/Data/SocketMessage.cs

using System.Text.Json.Serialization;

namespace HermesSocketLibrary.Socket.Data
{
    public class SocketMessage
    {
        [JsonPropertyName("op")]
        public int? OpCode { get; set; }
        [JsonPropertyName("d")]
        public object? Data { get; set; }
    }
}