How to integrate soap xml API of unicommerce in nodejs

Question

I'm attempting to use the Node.js soap module to access the Unicommerce xml API. In soapUI, it functions properly. However, it is not included in the node application. I experience this error.

ERROR: {Error: Cannot parse response}.

   var express = require("express");
    var soap = require("soap");
    var http = require('http');
    var app = express();
    var router = express.Router();
var username = "*********";
var password = "************";
var auth = "Basic " + new Buffer(username + ":" + password).toString("base64");// not working 

var wsdlUrl = 'https://lensclues.unicommerce.com/services/soap/uniware16.wsdl?facility=01';

const Autentication = '<soapenv:Header>' +
'<wsse:Security soapenv:mustUnderstand="1" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">' +
'<wsse:UsernameToken wsu:Id="UsernameToken-D6BE484999DA5E97D4148483888689316">' +
'<wsse:Username>**********</wsse:Username>' +
'<wsse:Password Type="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-username-token-profile-1.0#PasswordText">*******************</wsse:Password>'+
'<wsse:Nonce EncodingType="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-soap-message-security-1.0#Base64Binary">$$$$$$$$$$$</wsse:Nonce>'+
'<wsu:Created>2017-01-19T15:14:46.893Z</wsu:Created>'+
'</wsse:UsernameToken>'+
'</wsse:Security>' +
'</soapenv:Header>'
 soap.createClient(wsdlUrl, function (err, soapClient) {
soapClient.addSoapHeader(Autentication);
const data = '<soapenv:Envelope xmlns:ser="http://uniware.unicommerce.com   /services/" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">' + '<soapenv:Body>' +
    '<ser:GetInventorySnapshotRequest>' +
    '<ser:ItemTypes>' +
    '<ser:ItemType>' +
    '<ser:ItemSKU>LCSGDB555xD15165S4PURx124</ser:ItemSKU>' +
    '</ser:ItemType>' +
    '</ser:ItemTypes>' +
    '<ser:UpdatedSinceInMinutes>600</ser:UpdatedSinceInMinutes>' +
    '</ser:GetInventorySnapshotRequest>' +
    '</soapenv:Body>' +
    '</soapenv:Envelope>'
if (err) {
    console.log("err", err);
}
soapClient.GetInventorySnapshot({    
    data
}, function (err, result) {
    if (err) {
        console.log("ERROR:", err);
    }
    else {
        console.log("result", result);
    }
});

The question is: How do I send the request and print the answer? Could you have any clues about this kind of issue?