POST / HTTP/1.1
Content-Type:application/x-www-form-urlencoded; charset=utf-8
Host:example.amazonaws.com
Content-Length:13
X-Amz-Date:20150830T123600Z
X-Amz-Region-Set:us-east-1
x-amz-content-sha256:9095672bbd1f56dfc5b65f3e153adc8731a4a654192329106275f4c7b24d0b6e
Authorization:AWS4-ECDSA-P256-SHA256 Credential=AKIDEXAMPLE/20150830/service/aws4_request, SignedHeaders=content-length;content-type;host;x-amz-content-sha256;x-amz-date;x-amz-region-set, Signature=3045022100c016dc61cbd380cf8160711320957071f5c122ef69164d56d02f79daf51a0603022043e3313aa2f6b46285cc89dfe5616ccc74c810a3d7ea25b76ee1ca496f7facba

Param1=value1