diff --git a/packages/common/src/adapters/activity.ts b/packages/common/src/adapters/activity.ts
index 7d9cfcd242a..a31cce83a10 100644
--- a/packages/common/src/adapters/activity.ts
+++ b/packages/common/src/adapters/activity.ts
@@ -1,22 +1,56 @@
-import type { Activity, Playlist, Track } from '@audius/sdk'
-import { ActivityItemTypeEnum } from '@audius/sdk'
+import type {
+  Activity,
+  Playlist,
+  PlaylistWithoutTracks,
+  Track
+} from '@audius/sdk'
+import {
+  ActivityItemTypeEnum,
+  PlaylistWithoutTracksFromJSON,
+  TrackFromJSON
+} from '@audius/sdk'
 
 import { userCollectionMetadataFromSDK } from './collection'
 import { userTrackMetadataFromSDK } from './track'
 
+/**
+ * Activity.item from getRepostsByHandle can be raw API JSON (snake_case) when
+ * the response discriminator isn't used. Normalize to SDK shape (camelCase)
+ * using the SDK's FromJSON before passing to our adapters.
+ */
+function normalizeActivityItem(
+  item: object,
+  itemType:
+    | typeof ActivityItemTypeEnum.Track
+    | typeof ActivityItemTypeEnum.Playlist
+): Track | PlaylistWithoutTracks {
+  const isRaw = 'user_id' in item && !('userId' in item)
+  if (!isRaw) {
+    return item as Track | PlaylistWithoutTracks
+  }
+  if (itemType === ActivityItemTypeEnum.Track) {
+    return TrackFromJSON(item as Parameters<typeof TrackFromJSON>[0])
+  }
+  return PlaylistWithoutTracksFromJSON(
+    item as Parameters<typeof PlaylistWithoutTracksFromJSON>[0]
+  )
+}
+
 export const activityFromSDK = (input: Activity) => {
   const { timestamp, itemType: item_type, item } = input
   if (item_type === ActivityItemTypeEnum.Track) {
+    const normalized = normalizeActivityItem(item as object, item_type)
     return {
       timestamp,
       item_type,
-      item: userTrackMetadataFromSDK(item as Track)
+      item: userTrackMetadataFromSDK(normalized as Track)
     }
   } else if (item_type === ActivityItemTypeEnum.Playlist) {
+    const normalized = normalizeActivityItem(item as object, item_type)
     return {
       timestamp,
       item_type,
-      item: userCollectionMetadataFromSDK(item as Playlist)
+      item: userCollectionMetadataFromSDK(normalized as Playlist)
     }
   }
   return undefined
@@ -25,10 +59,11 @@ export const activityFromSDK = (input: Activity) => {
 export const trackActivityFromSDK = (input: Activity) => {
   const { timestamp, itemType: item_type, item } = input
   if (item_type === ActivityItemTypeEnum.Track) {
+    const normalized = normalizeActivityItem(item as object, item_type)
     return {
       timestamp,
       item_type,
-      item: userTrackMetadataFromSDK(item as Track)
+      item: userTrackMetadataFromSDK(normalized as Track)
     }
   }
   return undefined
@@ -37,16 +72,28 @@ export const trackActivityFromSDK = (input: Activity) => {
 export const repostActivityFromSDK = (input: Activity) => {
   const { timestamp, itemType: item_type, item } = input
   if (item_type === ActivityItemTypeEnum.Track) {
-    return {
-      timestamp,
-      item_type,
-      item: userTrackMetadataFromSDK(item as Track)
+    try {
+      const normalized = normalizeActivityItem(item as object, item_type)
+      return {
+        timestamp,
+        item_type,
+        item: userTrackMetadataFromSDK(normalized as Track)
+      }
+    } catch (error) {
+      console.error('repostActivityFromSDK track error', error)
+      return undefined
     }
   } else if (item_type === ActivityItemTypeEnum.Playlist) {
-    return {
-      timestamp,
-      item_type,
-      item: userCollectionMetadataFromSDK(item as Playlist)
+    try {
+      const normalized = normalizeActivityItem(item as object, item_type)
+      return {
+        timestamp,
+        item_type,
+        item: userCollectionMetadataFromSDK(normalized as Playlist)
+      }
+    } catch (error) {
+      console.error('repostActivityFromSDK playlist error', error)
+      return undefined
     }
   }
   return undefined