How to show push notification for specific user on one client only?

Question

Push technologies

Let's say we send notifications for a specific user. Each user can subscribe to notifications in multiple apps. A spherical example in a vacuum:
1) a web-app in Chrome on a PC (the main browser)
2) a web-app in Firefox on a PC (switched to Chrome, the subscription remained, periodically launches)
3) a web-app in Chrome on a phone (used before client-app appeared, subscription remained)
4) web-app in Firefox on the phone (spare because it supports proxy, used before client-app appeared, subscription remained)
5) android-app on the phone (currently in use)
Actually the question is how to show a notification in only one application, and not spam everywhere? Like in telegram. It is clear that the service-worker should not receive data, but a link to the data, taking which it will go bad and other clients will not receive them.
It is not clear how to deal with all this:
- notifications to different clients can come with different delays
- the active client (1-4) should be the first to get the data, if there is not one at the moment, then the application on the phone (5), if it is not there either then 3 or 4.
- I noticed such behavior behind the cart that if a notification appeared in the browser, but you did not click on it, then after a while it is duplicated on the phone.