v15 -> v16

Internal Ticket Number Type Change

InternalTicketNumber has been changed from a UUID to a string.

v15

var webhook = new VerificationWebhook
{
    AccountId = "1234567",
    PhoneNumber = "+18005555555",
    Status = "VERIFIED",
    InternalTicketNumber = Guid.Parse("acde070d-8c4c-4f0d-9d8a-162843c10333")
};

v16

var webhook = new VerificationWebhook
{
    AccountId = "1234567",
    PhoneNumber = "+18005555555",
    Status = "VERIFIED",
    InternalTicketNumber = "acde070d-8c4c-4f0d-9d8a-162843c10333"
};