GET / HTTP/1.1
Host:example.amazonaws.com
X-Amz-Date:20150830T123600Z
X-Amz-Region-Set:us-east-1
Authorization:AWS4-ECDSA-P256-SHA256 Credential=AKIDEXAMPLE/20150830/service/aws4_request, SignedHeaders=host;x-amz-date;x-amz-region-set, Signature=304502201f8540fba7741deef60d162a2cf5a8abece28db296174e82420ae6790d93b8af022100d3109ac9ec7995b9e976efa2c54b278d3fab0737e3c73483771773d2061d8f3f

