{"status":"success","message":"Cards fetched","data":{"cards":[{"id":"6","branch_id":"1","operator":"Grameen","card_type":"Balance","name":"20","purchase_price":"29.00","sale_price":"20.00","stock_quantity":"507","updated_at":"2026-09-01 03:01:34","total_purchase_value":14703,"total_sale_value":10140}],"summary":{"total_inventory_purchase_value":14703,"total_inventory_sale_value":10140,"potential_profit":-4563}}}