If you enable Access Manager on your keyset in the Admin Portal, you automatically disable default access to channels, channel groups, and other users' metadata until these are specifically granted. You can additionally restrict this access by authorizing only one user (
authorized_uuid) to perform certain operations on selected resources.
Once a user is given read or write permissions, it will continue to have them until the
ttl (time-to-live for the token) set in the grant token request expires. You can override existing access to PubNub resources by requesting the server for a new token with changed permissions and using this token in all subsequent requests. Previous access will be removed once the original token expires. For this reason, it's recommended to use short-lived tokens with
60 minutes. If you have a business reason to block existing tokens and permissions, contact support for assistance.