What attributes are there in the object named ActionList in Report Level template?

Hancj Expensify Customer Posts: 1

I read the guide at https://integrations.expensify.com/Integration-Server/doc/export_report_template.html. I can not find more information about this: “List of objects that correspond to the “Report History & Comments” on the website. Each object has an action for the type of the action, accountEmail for the account that performed the action, created for the date-time the action occurred, and a details object with additional information like message.”

What's the other additional information in a details object?