POST / HTTP/1.1
Host:example.amazonaws.com
My-Header1:value1
X-Amz-Date:20150830T123600Z
Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;my-header1;x-amz-date, Signature=c5410059b04c1ee005303aed430f6e6645f61f4dc9e1461ec8f8916fdf18852c