using Newtonsoft.Json;
using System.Collections.Generic;

        public static string FromClass<T>(T data, bool isEmptyToNull = false,
                                          JsonSerializerSettings jsonSettings = null)
        {
            string response = string.Empty;

            if (!EqualityComparer<T>.Default.Equals(data, default(T)))
                response = JsonConvert.SerializeObject(data, jsonSettings);

            return isEmptyToNull ? (response == "{}" ? "null" : response) : response;
        }