POST /?Param1=value1 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=host;x-amz-date, Signature=28038455d6de14eafc1f9222cf5aa6f1a96197d7deb8263271d420d138af7f11