refactor: added remaining time in beneficiary cooldown failure response

src/middlewares/cooldown.middleware.js

@@ -16,9 +16,10 @@ async function checkBeneficiaryCooldown(req, res, next) {
     const createdAt = new Date(beneficiary['created_at']);
     if (createdAt > cooldownPeriod) {
       const remaining = (now - createdAt) / (60 * 1000);
-      logger.warn('TRANSACTION_FAILED_BENEFICIARY_COOLDOWN_ACTIVE');
+      logger.warn('TRANSACTION_FAILED BENEFICIARY_COOLDOWN_ACTIVE');
       return res.status(403).json({
-        error: `beneficiary cooldown period active. Retry after ${remaining} minutes`,
+        remaining,
+        error: 'beneficiary cooldown period active',
       });
     }
   }