using System;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var jsonTestString = "{ 'fistname': 'john', 'lastname': 'smith', 'age': 26, 'city': 'los angeles' }";

        var stronglyTyped = JsonConvert.DeserializeObject<JsonTestClass>(jsonTestString);

        Console.WriteLine(stronglyTyped.fistname);

        Console.WriteLine(stronglyTyped.lastname);

        Console.WriteLine(stronglyTyped.age);

        dynamic notStronglyTyped = JsonConvert.DeserializeObject(jsonTestString);

        Console.WriteLine(notStronglyTyped.fistname);

        Console.WriteLine(notStronglyTyped.lastname);

        Console.WriteLine(notStronglyTyped.age);

    }

    public class JsonTestClass

    {

        public string fistname;

        public string lastname;

        public int age;

    }

}