[Question] Use external resource in nb-action's icon tag

Hi all dear collegues, I need your help to understand how to use external resources (coming from a rest request) in the icon tag of nb-action.

So if I do the following:
``
it works correctly, since it use the "eva eva-star" icon.

But what I'm looking for is some way to do this:
``

Is this possible? if yes, can you tell me how? Many many thanks.

Luca