Try to be a bit more clear about what object is being delivered

src/jobs/deliver.rs

@@ -1,4 +1,7 @@
-use crate::{error::Error, jobs::JobState};
+use crate::{
+    error::Error,
+    jobs::{debug_object, JobState},
+};
 use activitystreams::iri_string::types::IriString;
 use background_jobs::{ActixJob, Backoff};
 use std::{future::Future, pin::Pin};
@@ -14,7 +17,7 @@ impl std::fmt::Debug for Deliver {
         f.debug_struct("Deliver")
             .field("to", &self.to.to_string())
             .field("activity", &self.data["type"])
-            .field("object", &self.data["object"]["type"])
+            .field("object", debug_object(&self.data))
             .finish()
     }
 }

src/jobs/deliver_many.rs

@@ -1,6 +1,6 @@
 use crate::{
     error::Error,
-    jobs::{Deliver, JobState},
+    jobs::{debug_object, Deliver, JobState},
 };
 use activitystreams::iri_string::types::IriString;
 use background_jobs::ActixJob;
@@ -16,7 +16,7 @@ impl std::fmt::Debug for DeliverMany {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.debug_struct("DeliverMany")
             .field("activity", &self.data["type"])
-            .field("object", &self.data["object"]["type"])
+            .field("object", debug_object(&self.data))
             .finish()
     }
 }

src/jobs/mod.rs

@@ -25,6 +25,20 @@ use background_jobs::{
 };
 use std::time::Duration;
 
+fn debug_object(activity: &serde_json::Value) -> &serde_json::Value {
+    let mut object = &activity["object"]["type"];
+
+    if object.is_null() {
+        object = &activity["object"]["id"];
+    }
+
+    if object.is_null() {
+        object = &activity["object"];
+    }
+
+    object
+}
+
 pub(crate) fn create_workers(
     state: State,
     actors: ActorCache,