This method lets you enroll an email or SMS-based authenticator for a user whose email address or phone number has already been verified via an external platform.
This method should not be used if you haven’t yet verified the user’s email or phone number. It
does not send out an email / SMS to initiate a verification process - if you need to verify an
email address or phone number, you should use the Web SDK, Mobile
SDK, or the pre-built
UI.