Response XML

<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="http://www.marketo.com/mktows/">
  <SOAP-ENV:Body>
    <ns1:successListOperation>
      <result>
        <success>false</success>
        <statusList>
          <leadStatus>
            <leadKey>
              <keyType>IDNUM</keyType>
              <keyValue>87710</keyValue>
            </leadKey>
            <status>false</status>
          </leadStatus>
          <leadStatus>
            <leadKey>
              <keyType>IDNUM</keyType>
              <keyValue>1089946</keyValue>
            </leadKey>
            <status>true</status>
          </leadStatus>
        </statusList>
      </result>
    </ns1:successListOperation>
  </SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Sample Code - PHP

 <?php

  $debug = true;

  $marketoSoapEndPoint     = "";  // CHANGE ME
  $marketoUserId           = "";  // CHANGE ME
  $marketoSecretKey        = "";  // CHANGE ME
  $marketoNameSpace        = "http://www.marketo.com/mktows/";

  // Create Signature
  $dtzObj = new DateTimeZone("America/Los_Angeles");
  $dtObj  = new DateTime('now', $dtzObj);
  $timeStamp = $dtObj->format(DATE_W3C);
  $encryptString = $timeStamp . $marketoUserId;
  $signature = hash_hmac('sha1', $encryptString, $marketoSecretKey);

  // Create SOAP Header
  $attrs = new stdClass();
  $attrs->mktowsUserId = $marketoUserId;
  $attrs->requestSignature = $signature;
  $attrs->requestTimestamp = $timeStamp;
  $authHdr = new SoapHeader($marketoNameSpace, 'AuthenticationHeader', $attrs);
  $options = array("connection_timeout" => 20, "location" => $marketoSoapEndPoint);
  if ($debug) {
    $options["trace"] = true;
  }

  // Create Request
  $request = new stdClass();
  $request->listOperation = "ISMEMBEROFLIST"; // ADDTOLIST, ISMEMBEROFLIST, REMOVEFROMLIST

  $listKey = new stdClass();
  $listKey->keyType = "MKTOLISTNAME";  // MKTOLISTNAME, MKTOSALESUSERID, SFDCLEADOWNERID
  $listKey->keyValue = "Trav-Test-List";
  $request->listKey = $listKey;

  $leadKey = array("keyType" => "IDNUM", "keyValue" => "87710");
  $leadKey2 = array("keyType" => "IDNUM", "keyValue" => "1089946");
  $leadList = new stdClass();

  $leadList->leadKey = array($leadKey, $leadKey2);
  $request->listMemberList = $leadList;
  $request->strict = false;

  $params = array("paramsListOperation" => $request);
  $soapClient = new SoapClient($marketoSoapEndPoint ."?WSDL", $options);
  try {
    $response = $soapClient->__soapCall('listOperation', $params, $options, $authHdr);
  }
  catch(Exception $ex) {
    var_dump($ex);
  }
  if ($debug) {
    print "RAW request:\n" .$soapClient->__getLastRequest() ."\n";
    print "RAW response:\n" .$soapClient->__getLastResponse() ."\n";
  }

  print_r($response);

?>

Sample Code - Java

import com.marketo.mktows.*;
import java.net.URL;
import javax.xml.namespace.QName;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Hex;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.Marshaller;


public class ListOperation {
    public static void main(String[] args) {

        System.out.println("Executing List Operation");
        try {
            URL marketoSoapEndPoint = new URL("CHANGE ME" + "?WSDL");
            String marketoUserId = "CHANGE ME";
            String marketoSecretKey = "CHANGE ME";

            QName serviceName = new QName("http://www.marketo.com/mktows/", "MktMktowsApiService");
            MktMktowsApiService service = new MktMktowsApiService(marketoSoapEndPoint, serviceName);
            MktowsPort port = service.getMktowsApiSoapPort();

            // Create Signature
            DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
            String text = df.format(new Date());
            String requestTimestamp = text.substring(0, 22) + ":" + text.substring(22);
            String encryptString = requestTimestamp + marketoUserId ;

            SecretKeySpec secretKey = new SecretKeySpec(marketoSecretKey.getBytes(), "HmacSHA1");
            Mac mac = Mac.getInstance("HmacSHA1");
            mac.init(secretKey);
            byte[] rawHmac = mac.doFinal(encryptString.getBytes());
            char[] hexChars = Hex.encodeHex(rawHmac);
            String signature = new String(hexChars);

            // Set Authentication Header
            AuthenticationHeader header = new AuthenticationHeader();
            header.setMktowsUserId(marketoUserId);
            header.setRequestTimestamp(requestTimestamp);
            header.setRequestSignature(signature);

            // Create Request
            ParamsListOperation request = new ParamsListOperation();
            request.setListOperation(ListOperationType.ISMEMBEROFLIST);

            ListKey listKey = new ListKey();
            listKey.setKeyType(ListKeyType.MKTOLISTNAME);
            listKey.setKeyValue("Trav-Test-List");
            request.setListKey(listKey);

            LeadKey key = new LeadKey();
            key.setKeyType(LeadKeyRef.IDNUM);
            key.setKeyValue("87710");

            LeadKey key2 = new LeadKey();
            key2.setKeyType(LeadKeyRef.IDNUM);
            key2.setKeyValue("1089946");

            ArrayOfLeadKey leadKeys = new ArrayOfLeadKey();
            leadKeys.getLeadKeies().add(key);
            leadKeys.getLeadKeies().add(key2);

            request.setListMemberList(leadKeys);

            JAXBElement<Boolean> strict = new ObjectFactory().createParamsListOperationStrict(false);
            request.setStrict(strict);

            SuccessListOperation result = port.listOperation(request, header);

            JAXBContext context = JAXBContext.newInstance(SuccessListOperation.class);
            Marshaller m = context.createMarshaller();
            m.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
            m.marshal(result, System.out);

        }
        catch(Exception e) {
            e.printStackTrace();
        }
    }
}