AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20150830/us-east-1/service/aws4_request, SignedHeaders=host;x-amz-date;x-amz-security-token, Signature=07ec1639c89043aa0e3e2de82b96708f198cceab042d4a97044c66dd9f74e7f8