HTTP/1.1 200 OK
Content-Type: text/xml
Transfer-Encoding: chunked
Date: Mon, 03 Jan 2011 01:19:03 GMT
Server: AWS Simple Queue Service

<ChangeMessageVisibilityResponse>
    <ResponseMetadata>
        <RequestId>
            6a7a282a-d013-4a59-aba9-335b0fa48bed
        </RequestId>
    </ResponseMetadata>
</ChangeMessageVisibilityResponse>