How can I capture an authorization change as a portable event in Casbin?

[massimo-create]

Hello Casbin community,

I’m validating a vendor-neutral approach for representing an authorization change as:

BEFORE → authorization state
CHANGE → authorization modification
AFTER → resulting authorization state
EVIDENCE → decision/audit evidence

I’m looking for one small, controlled, non-production example using Casbin.

For example, a simple policy change where we can observe the authorization state before and after the modification, trigger an authorization decision, and identify the corresponding policy state and evidence.

No production access, credentials, or customer data are required.

The goal is to validate whether this transition can be represented as a portable authorization-change event.

What would be the recommended way to capture the BEFORE/CHANGE/AFTER state together with the corresponding authorization decision and policy evidence in Casbin?

Thank you,
Massimo