AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=2287c0f96af21b7ccf3ee4a2905bcbb2d6f9a94c68d0849f3d1715ef003f2a05