D823dfbc6d0a868e81ad4143de00124b33a8c2241156b920d1ee345d7702?x amz algorithm=aws4 hmac sha256&x amz credential=akiaii6jt62oqlhbx2eq%2f20190619%2fap northeast 1%2fs3%2faws4 request&x amz date=20190619t195032z&x amz expires=900&x amz signedheaders=host&x amz signature=8e4db2d59f4fac8543c7ba2f55fafc32cc80eebf93327f8ee44c4a069a087ccd