https://51.ru/exchange/2026-07-31T06:12:03.941739153Zhttps://51.ru/exchange/usd/2026-07-31T06:12:03.941744366Zhttps://51.ru/exchange/eur/2026-07-31T06:12:03.941746522Zhttps://51.ru/exchange/cny/2026-07-31T06:12:03.941747262Z