Value that indicates that you want to disable unauthenticated unsubsciption of the subscription.
If parameter is present in the request, the request has an AWS signature, and the value
of this parameter is "true", only the topic owner and the subscription owner will be
permitted to unsubscribe the endopint, and the Unsubscribe action will require AWS
authentication.
Declaration Syntax| C# |
public string AuthenticateOnUnsubscribe { get; set; }