Update app.js

app.js

@@ -390,6 +390,8 @@ app.post('/webhook/paystack', express.raw({ type: 'application/json', limit: '1m
     console.log('--- PAYSTACK WEBHOOK (INTERESTING EVENT) ---');
     console.log('event:', event);
     // persist webhook for auditing (best-effort)
+    console.log(payload);
+    
     try {
       if (db) {
         await db.collection('paystack-webhooks').add({