For a sub-account, if you just want to be able to see what has recently happened, or what one user or another has just done, it will show you that as well. You're also going to be able to see the audit logs within each account.

Go to the sub account and click on Settings.

Then click on audit logs.

You should be able to see going forward what happens to this account, through real-time event communication which includes name, module, actions, done by, date & time.

There is also an option to view details. Click on three dots and open view details option.

You will be able to see all details which have been added or updated in the sub-account.