In the JSON sense, an object containing fields, which may also contain nested
subobjects. No constr
Free-form string used to decide what fields to expect in the event detail.
AWS resources, identified by Amazon Resource Name (ARN), which the event
primarily concerns. Any nu
The source of the event.
The timestamp of the event, per RFC3339
[https://www.rfc-editor.org/rfc/rfc3339.txt]. If no timesta