POST / HTTP/1.1
Content-Type:application/x-www-form-urlencoded; charset=utf-8
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=ad1ac0c5fa1793b9b9d23894903b9ce84044d014533a633091e12c840473b393

Param1=value1