ふぁぼった時のログは下記のような感じですねー
[active_model_serializers] Rendered ActivityPub::LikeSerializer with ActivityPub::Adapter (0.69ms)
[active_model_serializers] Rendered REST::StatusSerializer with ActiveModelSerializers::Adapter::Attributes (209.99ms)
method=POST path=/api/v1/statuses/296745/favourite format=html controller=Api::V1::Statuses::FavouritesController action=create status=200 duration=870.06 view=33.07 db=793.29
最初の2行はリモートインスタンスに通知してるのかな?