As a first step towards supporting Echo notifications fully, we need to convert our existing polling system for Wikidata reverts to use the new push notification infrastructure. The user experience should remain unchanged.
Additional push notifications documentation: https://www.mediawiki.org/wiki/Notifications/Developer_guide/Push
Note that this requires slightly different implementation for English compared to all other languages (which use Wikidata). It may be helpful to review/implement this ticket in combination with the API migration for English description editing: T257867