Handle expired web push subscriptions

[Zenitsu]

I noticed that the web push subscription expires daily, I'm not sure how to handle the re-subscription since Chrome doesn't support this event https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorkerGlobalScope/pushsubscriptionchange_event

Details:

- a subscription is generated in the service worker and posted to the server, stored in the DB

- sever sends web push, it works

- next day when I try to send web push I get the 410 Gone with message "push subscription has unsubscribed or expired." 

What can I do to renew the subscription? it would also be super useful if we could know how much time it is alive and renew it before it expires