Retrieve a knowledge question verification.

If the authenticated user does not have the entitlement 'authnAnyUser', then the user is only permitted to access verifications that they are associated with.

NB: Once a verification's state has changed from PENDING, it will cease to exist after a given time.

NB: To have this feature installed on the tenant please contact support.

Entitlements:
- manageEnrollMFAMethodAnyUser (Manage second-factor authentication enrollment for all users)
- manageEnrollMFAMethod (Manage own second-factor authentication enrollment)
- readEnrollMFAMethodAnyUser (Read second-factor authentication enrollment for all users)
- readEnrollMFAMethod (Read own second-factor authentication enrollment)
- authnAnyUser (Authenticate any user)
- authn (Authenticate self)