The events you can subscribe to depend on the type of object.
Subscribing to Object Events Subscription Events for Configuration Features Subscription Events for Configuration Options Subscription Events for Decisions Subscription Events for Defects and Defect Actions Subscription Events for Documents and Document Sheets Subscription Events for Issues Subscription Events for Libraries and Classes Subscription Events for Logical Features Subscription Events for Manufacturing Features Subscription Events for Parts Subscription Events for Products Subscription Events for Requirements Subscription Events for Routes