Serialization of paid cart DTO v2 to JSON text.

PaidCartDto2JsonText.cs

var paidCartDto2 = new PaidCart
{
  PaidItems = new Item[] {
    new Item {
      Id = "1bcd",
      Title = "gizmo"
    },
    new Item {
      Id = "3cdf",
      Title = "widget",
      Description = "A very useful item"
    }
  },
  Payment = new Money {
    Mount = 123.5,
    Currency = "USD"
  },
  Timestamp = "2020-04-11T10:11:33.514+02:00"
};

var paidCartDto2JsonText = JsonConvert.SerializeObject(paidCartDto2);