Edit resource in attach action form?

I'm having a Resource class that has a RelationManager. Each relation has credentials stored in a JSON field from the main record of the resource.

Is it somehow possible to add a form to the AttachAction storing/updating fields using the credentials field column as state path of the resource instead of trying to update the related record or pivot columns?

Tables\Actions\AttachAction::make()
                    ->preloadRecordSelect()
                    ->form([...])
                    ->multiple()


Thanks in advance!
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