INetworkService.cs

public interface INetworkService
{
        Task<NetResult<TResult>> GetAsync<TResult>(string uri, string token = "");

        Task<NetResult<TResult>> PostAsync<TResult>(string uri, TResult data, string token = "", string header = "");

        Task<NetResult<TResult>> PostAsync<TResult>(string uri, string data, string clientId, string clientSecret);

	Task<NetResult<TResult>> PutAsync<TResult>(string uri, TResult data, string token = "", string header = "");

        Task<NetResult<bool>> PatchAsync(string uri, object data, string token = "", string header = "");

        Task DeleteAsync(string uri, string token = "");
}

NetResult.cs

public class NetResult<T>
{
        public int ErrorCode
        { 
            get;
            set; 
        }

        public string ErrorMessage
        {
            get;
            set;
        }

        public bool IsError
        {
            get;
            set;
        }

        public T Data
        {
            get;
            set;
        }
}