The repository creates a links to the review
The repository creates a new public? entry in the metadata for the preprint about a new review available in the overlay journal
The new entry may be a text template or a single link:
Text Template: A <<object.type >> from << actor.name >> is available at << object.id >>
That will be a metadata field with: A Review from Overlay Journal is available at https://overlay-journal.com/reviews/000001/00001
Single link: with the use of a specific metadata field or existing one: notify.review || https://overlay-journal.com/reviews/000001/00001