diff --git a/lib/vonbraun/activity_pub/object.ex b/lib/vonbraun/activity_pub/object.ex
index 4d0fc63..3f675d6 100644
--- a/lib/vonbraun/activity_pub/object.ex
+++ b/lib/vonbraun/activity_pub/object.ex
@@ -29,6 +29,8 @@ defmodule Vonbraun.ActivityPub.Object do
 
     copy_recipients? = Keyword.get(options, :copy_recipients, false)
 
+    actor_id = Keyword.get(options, :actor, my_id())
+
     object =
       if is_map(object) && copy_recipients? do
         Map.merge(object, %{"to" => to, "cc" => cc})
@@ -44,7 +46,7 @@ defmodule Vonbraun.ActivityPub.Object do
       "bcc" => [],
       "bto" => [],
       "type" => type,
-      "actor" => my_id(),
+      "actor" => actor_id,
       "object" => object
     }
   end