Problem description

1. The description confused "user" and "subscriber".

Example re 1:
Network operators know to which user a network resource is assigned at a given moment
Network operators know to which subscriber a network resource is assigned at a given moment

The user might be the subscriber's child or any other person using the device.

2. The term 3-legged tokenis not defined.

Expected action
Rephrase the user - subscriber text.

Either define 3-legged token or rephrase.
Clarify prompt=none and 3-legged token and user consent/privacy.