Order events:
- order.placed
- order.fulfilled
- suborder.fulfilled
Product events:
- product.activated
- product.archived
- product.back_in_stock
- product.backorderable
- product.create
- product.delete
- product.discontinued
- product.drafted
- product.out_of_stock
- product.update
For event payloads please visit your Settings -> Developers -> Webhooks section, eg.