POST /?Param1=value1&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIDEXAMPLE%2F20150830%2Fus-east-1%2Fservice%2Faws4_request&X-Amz-Date=20150830T123600Z&X-Amz-SignedHeaders=host&X-Amz-Expires=3600&X-Amz-Signature=a9ef26247f293bffe40eeff86a0480ba8c14d31503b2e0c3399e3a16bf1a3682 HTTP/1.1
Host:example.amazonaws.com