POST / HTTP/1.1
Content-Type:application/x-www-form-urlencoded
Host:example.amazonaws.com
Content-Length:13
X-Amz-Date:20150830T123600Z
x-amz-content-sha256:9095672bbd1f56dfc5b65f3e153adc8731a4a654192329106275f4c7b24d0b6e
Authorization:AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=content-length;content-type;host;x-amz-content-sha256;x-amz-date, Signature=d3875051da38690788ef43de4db0d8f280229d82040bfac253562e56c3f20e0b

Param1=value1