When this privacy policy is being evaluated as a result of a cascading deletion, this will be populated with information on the cascading delete.
When this privacy policy is being evaluated as a result of an update, this will be populated with the value of the entity before the update. Note that this doesn't only apply to UPDATE authorization actions though: when an entity is updated it is re-LOADed after the update completes.
Information about the reason this privacy policy is being evaluated.