How to notify on creation/update of external bank account?

Summary:

We want to receive notifications (via email or bell notification) when a external bank account is created or updated to rapidly identify fraudulent changes.

Content (please ensure you mask any confidential information):

This came up specifically around the Me > Expenses module, but a generalized solution would be appreciated.

We have turned on audit in Payments > External Bank Account Audit Setup but that only allows us to find it in the Audit Report.

The Alert Composer that we use to notify about similar changes to the Personal Payment Method for Payroll doesn't seem to support this use case.

Open to alternatives, such as an auto-approval workflow that incorporates an Info notification.