using System;
using Newtonsoft.Json;

public class Test
{
    public static void Main()
    {
        var testObject = new TestClass
        {
            TestString = "Test",
            TestInteger = 1234
        };

        // turn class into a json string
        // output: { "TestString":"Test", "TestInteger": 1234 }
        var classSerializedToString = JsonConvert.Serialize(testObject);

        // turn string back into class
        TestClass classFromSerializedString = JsonConvert.Deserialize(classSerializedToString);
    }
}

public class TestClass
{
    public string TestString { get; set; }
    public int TestInteger { get; set; }
}