Is my express post request is correct? - ajax

Question

I'm trying to understand how Post Request works with express. I my case I would like to be able to update an web API call (is this the right term ?) with Google Analytics API. Most of the examples I found here or there are about handling post message or sign in operation.
Following this question here is what I have understand. On the front-end, using axios here is what I need to pass :
axios.post("http://localhost:3000/endpoints", my_parameters)
I can easily send this on the server side with react/redux. however on the server side, I'm kind of lost. I've got the following API call :
var key = require('./client_id.json')
var jwtClient = ...
var VIEW_ID = "ga:80820965";
var authorize = function( cb ) {
jwtClient.authorize(function(err) {
if (err) {
console.log(err);
return;
} else {
if ( typeof cb === "function") {
cb();
}
}
});
}
var queryData = function(req, res) {
authorize(function() {
analytics.data.ga.get({
'auth': jwtClient,
'ids': VIEW_ID,
'metrics': 'ga:uniquePageviews',
'dimensions': 'ga:pagePath',
'start-date': '30daysAgo',
'end-date': 'yesterday',
'sort': '-ga:uniquePageviews',
'max-results': 10,
}, function (err, response) {
if (err) {
console.log(err);
return;
}
res.send(response);
});
});
}
module.exports = {
queryData
};
and my express server set-up :
const app = express();
app.use('/', express.static('public'));
app.use('/', express.static('src'));
var ga = require('./src/apicall/gadata');
app.listen(process.env.PORT || 3000);
app.set('views', './src/views');
app.set('view engine', 'ejs');
app.use('/gadata', ga.queryData);
so after I've dispatched my axios.post, how do I handle it in my server.babel.js file ?
I guess I need to use a structure like this :
router.get('/newUser', (req, res) => {
TestUser.save({
name: 'sawyer',
email: 'sawyer#test.com'
}).then((result) => {
console.log('Saved!')
res.send(result)
})
})
but I don't really know how I should refactor it to pass my parameters so I can actually update my google analytics api call ?
thanks.