mp-ap/AppStart/Tables/Model.cs

using System;
using System.Collections.Generic;
namespace MySystem
{
    public class certModel
    {
        public List<Data> data { get; set; }
    }

    public class Data
    {
        public string serial_no { get; set; }
        public string effective_time { get; set; }
        public string expire_time { get; set; }
        public Encrypt_certificate encrypt_certificate { get; set; }

    }
    public class Encrypt_certificate
    {
        public string algorithm { get; set; }
        public string nonce { get; set; }
        public string associated_data { get; set; }
        public string ciphertext { get; set; }
    }
}