AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=content-type;host;x-amz-content-sha256;x-amz-date, Signature=20aab0d4849bc051a7446d70fe505b7c90a804af3ea247856091e85cc901314f