POST / 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=5da7c1a2acd57cee7505fc6676e4e544621c30862966e37dddb68e92efbe5d6b