This is an event that is kicked off nightly for each subscription.

This event only occurs for active subscriptions. Cancelled subscriptions will not fire this event.

Internally, this event is used for updating caches, consistency checks, scheduled events for subscriptions, etc.
Externally, you can choose to hook into this event and use it for whatever you would like.

Note these fields:

• context_str = package
• context_id = ... (this will be the package_id of the subscription)
• event = nightly