Parse XML with unknown elements in C++ and Qt - c++

Question

I've got an XML document that I receive from a REST service that I wish to parse. The service might change their element and tag names so I'm trying to come up with some completely generic solution that saves the document structure as some kind of object with attributes.
I'm not sure how/if the C++ and Qt API's allow me to accomplish such a thing however. I've thought of creating some kind of keyed map that can hold element names as string keys and values would be their children in some recursive fashion. Being very new to Qt and C++ I'm not sure how I can accomplish this.
This could be an example XML document:
<root>
<element id="1">
<name>SomeName</name>
<desc>SomeDesc</desc>
<params>
<param pid="1">True</param>
<param pid="2">False</param>
</params>
...
<Some unknown element></Some unknown element>
</element>
</root>
This is how I convert the HTTP response (QNetworkReply) to a DOM document I can use in Qt:
QByteArray data = reply->readAll();
QDomDocument doc;
doc.setContent(data);
QDomNodeList nodes = doc.elementsByTagName("root");
if (nodes.size() > 0) {
// Prints all elements, should be able to save in a map somehow? Perhaps there is a better way?
qDebug() << nodes.at(0).toElement().text();
}
I would love some input on how I can parse this in a way that allows me to keep all information in the XML even without knowing the element, attribute and tag names. Something like this:
element = {
id : 1,
name : 'SomeName',
desc : 'SomeDesc',
params : [{
pid : 1,
param : True
}, {
pid : 2,
param : False
}
],
some unknown element : some unknown values
}