POST / HTTP/1.1
Host:example.amazonaws.com
X-Amz-Date:20150830T123600Z
Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=content-type;host;x-amz-date, Signature=0c3bc22986c53164a4755b4466c2e17db853888c5ddb98567e700a3ecdb262f6