POST / HTTP/1.1
Host:example.amazonaws.com
My-Header1:VALUE1
X-Amz-Date:20150830T123600Z
Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;my-header1;x-amz-date, Signature=cdbc9802e29d2942e5e10b5bccfdd67c5f22c7c4e8ae67b53629efa58b974b7d