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=3046022100fddaaf816a31e30d04973875b13bc27b98da10907a3a1872fd5819a221334abc022100de2ee81d83b54f31efc82834de07e6cd4d5c6f25bfa08e0f29a15bb0977c343e

