dynamic contact = new ExpandoObject();

            contact.Name = "Patrick Hines";

            contact.Phone = "206-555-0144";

            contact.Address = new ExpandoObject();

            contact.Address.Street = "123 Main St";

            contact.Address.City = "Mercer Island";

            contact.Address.State = "WA";

            contact.Address.Postal = "68402";

            string res = JsonConvert.SerializeObject(contact);