Access a user's permission within the Post-Login Action

[gergo]

Basically what this page suggests:

Auth0’s actions provide access to an authorization object on the event, which is documented to contain the roles assigned to the user. However, I need access to the permissions associated with the roles without using the API Management client.

https://community.auth0.com/t/access-a-users-permissions-within-a-post-login-action-without-using-the-api-management-library/115256