diff --git a/bookwyrm/models/fields.py b/bookwyrm/models/fields.py
index 336ee4a1c..a1b2035b1 100644
--- a/bookwyrm/models/fields.py
+++ b/bookwyrm/models/fields.py
@@ -278,7 +278,7 @@ class ManyToManyField(ActivitypubFieldMixin, models.ManyToManyField):
         if value is None or value is MISSING:
             return None
         if not isinstance(value, list):
-            # TODO
+            # If this is a link, we currently aren't doing anything with it
             return None
         items = []
         for remote_id in value:
diff --git a/bookwyrm/tests/data/ap_user_rat.json b/bookwyrm/tests/data/ap_user_rat.json
new file mode 100644
index 000000000..0e36f1c62
--- /dev/null
+++ b/bookwyrm/tests/data/ap_user_rat.json
@@ -0,0 +1,39 @@
+{
+    "@context": [
+        "https://www.w3.org/ns/activitystreams",
+        "https://w3id.org/security/v1",
+        {
+            "manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
+            "schema": "http://schema.org#",
+            "PropertyValue": "schema:PropertyValue",
+            "value": "schema:value"
+        }
+    ],
+    "id": "https://example.com/users/rat",
+    "type": "Person",
+    "preferredUsername": "rat",
+    "name": "RAT???",
+    "inbox": "https://example.com/users/rat/inbox",
+    "outbox": "https://example.com/users/rat/outbox",
+    "followers": "https://example.com/users/rat/followers",
+    "following": "https://example.com/users/rat/following",
+    "summary": "",
+    "publicKey": {
+        "id": "https://example.com/users/rat/#main-key",
+        "owner": "https://example.com/users/rat",
+        "publicKeyPem": "-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC6QisDrjOQvkRo/MqNmSYPwqtt\nCxg/8rCW+9jKbFUKvqjTeKVotEE85122v/DCvobCCdfQuYIFdVMk+dB1xJ0iPGPg\nyU79QHY22NdV9mFKA2qtXVVxb5cxpA4PlwOHM6PM/k8B+H09OUrop2aPUAYwy+vg\n+MXyz8bAXrIS1kq6fQIDAQAB\n-----END PUBLIC KEY-----"
+    },
+    "endpoints": {
+        "sharedInbox": "https://example.com/inbox"
+    },
+    "bookwyrmUser": true,
+    "manuallyApprovesFollowers": false,
+    "discoverable": true,
+    "devices": "https://friend.camp/users/tripofmice/collections/devices",
+    "tag": [],
+    "icon": {
+        "type": "Image",
+        "mediaType": "image/png",
+        "url": "https://example.com/images/avatars/AL-2-crop-50.png"
+    }
+}