+
+ @impl true
+ def filter(%{"object" => target_actor, "type" => "Follow"} = message),
+ do: filter_message(target_actor, message)
+
+ @impl true
+ def filter(%{"actor" => actor, "type" => "Create"} = message),
+ do: filter_message(actor, message)
+
+ @impl true
+ def filter(message), do: {:ok, message}
+
+ @impl true
+ def describe, do: {:ok, %{}}