1c84073d42fe79b39a08df1a879e64368b6e36a0541f69fcd67adc96ad36?x amz algorithm=aws4 hmac sha256&x amz credential=akiaii6jt62oqlhbx2eq%2f20190619%2fap northeast 1%2fs3%2faws4 request&x amz date=20190619t194525z&x amz expires=900&x amz signedheaders=host&x amz signature=30b99cb0e5d36998c57a9d6eb8988c75fbda2f43c030a62a0546b7ea20e07647