AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=311c7f58b10b06de8540bb5a27f441ee0609f1d5ad7b191e68d7ea87d90e3d6b