diff --git a/backend/mpc-system/services/service-party-app/electron/main.ts b/backend/mpc-system/services/service-party-app/electron/main.ts
index a1ed3514..53ac9bce 100644
--- a/backend/mpc-system/services/service-party-app/electron/main.ts
+++ b/backend/mpc-system/services/service-party-app/electron/main.ts
@@ -1262,7 +1262,9 @@ function setupIpcHandlers() {
         publicKey: share.public_key_hex,
         createdAt: share.created_at,
         lastUsedAt: share.last_used_at,
-        participants: JSON.parse(share.participants_json || '[]'),
+        metadata: {
+          participants: JSON.parse(share.participants_json || '[]'),
+        },
       }));
       return { success: true, data: formatted };
     } catch (error) {