A notification computer system can retrieve an event data element from a queue in an entitlement computer system. The event data element can represent a change to an entitlement record of a profile's entitlement to a computer service. The notification system can process the event data element, which can include accessing and applying a computer-readable rule data structure that governs processing of events from the event queue. The processing can also include generating a notification in a manner dictated by the rule data structure, with the notification indicating the change to the data structure represented by the event data element. The processing of the event data element may also include sending the notification to an entitled profile whose entitlement to a computer service is represented by the entitlement data structure.