using System;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        string jarrayInputString = @"[ {""name"":""route4"",""properties"":{""addressPrefix"":""104.0.3.0/24"",""nextHopType"":""VnetLocal""}}, {""name"":""route5"",""properties"":{""addressPrefix"":""105.0.3.0/24"",""nextHopType"":""VnetLocal""}} ]";

        IEnumerable<JObject> jObjs = JArray.Parse(jarrayInputString)

            .Where(x => x["properties"]["nextHopType"].ToString() != "Internet")

            .Select(x => JObject.FromObject(new 

                                       { 

                                           name = x["name"].ToString(), 

                                           properties = new 

                                           { 

                                               addressPrefix = x["properties"]["addressPrefix"].ToString(),

                                               nextHopType = x["properties"]["nextHopType"].ToString()

                                           }

                                       })

                    )

            ;

        JArray surveytrackingA = JArray.FromObject(jObjs);

        Console.WriteLine(surveytrackingA[0]);

        Console.WriteLine(surveytrackingA[0]["properties"]);

    }

}