Audit saves the changes to ActiveRecord models. It has the following attributes:

• auditable: the ActiveRecord model that was changed
• user: the user that performed the change; a string or an ActiveRecord model
• action: one of create, update, or delete
• audited_changes: a hash of all the changes
• comment: a comment set with the audit
• version: the version of the model
• request_uuid: a uuid based that allows audits from the same controller request
• created_at: Time that the change was performed