172 shares
https://w3id.org/class/redaktor/shares
Definition
Every object MAY have a shares collection. This is a list of all Announce activities with this object as the object property, added as a side effect. The shares collection MUST be either an OrderedCollection or a Collection and MAY be filtered on privileges of an authenticated user or as appropriate when no authentication is given.see https://www.w3.org/TR/activitypub/#shares