using System;

using System.Collections.Generic;

using System.Linq;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

​

​

public class Program

{

    public static void Main()

    {   

        //hand initialization

        var data = 

            new Data{

                Id="6016-SH",

                Number=90,

                Floor=0,

                Doors = new List<int>{304,35,65},

                Keys =  new List<int>{60,58,8,5},

            };

        // If it's too long you can parse the json and map.

        // https://www.newtonsoft.com/json/help/html/ToObjectComplex.htm

        var input = @"[""6016-SH"",90,0,{""door"":[304,35,65],""key"":[60,58,8,5]}]"; // read it from somewhere

        var arr = JArray.Parse(input);

        var subArr = arr[3];// It's a JObject as {door}, curly barket for object Square for array..

        var result = new Data{          

                Id = (string)arr[0].ToObject(typeof(string)),

                Number = (int)arr[1].ToObject(typeof(int)),

                Floor = (int)arr[2].ToObject(typeof(int)),

                Doors = (List<int>)subArr["door"].ToObject(typeof(List<int>)),

                Keys =  (List<int>)subArr["key"].ToObject(typeof(List<int>)),

        };

        result.Dump();

    }

    //["6016-SH",90,0,{"door":[304,35,65],"key":[60,58,8,5]}]

    public class Data{

        public string Id{get;set;}

        public int Number{get;set;}

        public int Floor{get;set;}

        public List<int> Doors{get;set;}

        public List<int> Keys{get;set;}

    }

}