using System;

using Newtonsoft.Json.Linq;

public class Program

{

    public static void Main()

    {

        string json = @"

            {

              ""client_id"": ""26075235"",

              ""client_version"": ""1.0.0"",

              ""event"": ""app.uninstall"",

              ""timestamp"": 1478741247,

              ""https://something.com/something/url"": {

                ""id"": ""62581379"",

                ""site_id"": ""837771289247593785"",

                ""platform_app_id"": ""26075235""

              },

               ""nonURLuser"": {

                ""id"": ""62581379"",

                ""site_id"": ""837771289247593785"",

                ""platform_app_id"": ""26075235""

              }

            }";

        JObject jo = JObject.Parse(json);

       Console.WriteLine("nonURLuser User ID: " + jo.SelectToken("nonURLuser.id"));

        var urlId = jo.SelectToken("['https://something.com/something/url'].id");

        Console.WriteLine("Dot based URL User ID: " + urlId);

        Console.WriteLine("\nProperties:");

        foreach (var item in jo.Properties())

            Console.WriteLine(item.Path);

    }

}