<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <env:Body>
    <n1:echoHexBinaryResponse xmlns:n1="http://soapinterop.org/" env:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
      <return xmlns="" xsi:type="xsd:hexBinary">AAABBAAE</return>
    </n1:echoHexBinaryResponse>
  </env:Body>
</env:Envelope>