nodejs redirecting data from ajax to ejs

I'm using ajax post on client side to post the user details to database. On server side, i handle my post request as :

      app.post("/journey",function(req,res){
      var obj = JSON.stringify(req.body);
      var dt = JSON.parse(obj);
      //console.log(dt.zip)
      var journey_details = new Journey({
        zip : dt.zip,
        age65 : dt.age65,
        first_name : dt.fname,
        last_name : dt.lname
      });
      journey_details.save(function (err) {
     if (err) {
       return err;
     }
     else {
       console.log("Journey details saved");
       // i use some api here to get json data named parsedData
       //since i've to display the name and parsedData on a new page, i send the data to front end javascript as 
       res.send({redirect: '/profile', first_name : dt.fname, last_name : dt.lname, parsedData :  parsedData});
    });
    });

Since i'm using ajax post, i redirect on ajax success. Once i get the above data, i redirect it to a new profile ejs page using

    var final_url = "http://localhost:3000" + data.redirect +"/"+data.first_name + "/" + data.last_name;
    window.location.replace(final_url);

which will redirect them to localhost:3000/profile/fname/lname or may be i can use some unique id or anything like that in url and it is handled in my profile ejs page

But i'd also want to send the parsedData to my profile ejs page. Since. parsedData has multiple json object with many fields, i don't think i can send it via url as :

    var final_url = "http://localhost:3000" + data.redirect +"/"+data.first_name + "/" + data.last_name + "/"+data.parsedData;
    window.location.replace(final_url);

Is there any way so that i scan send it other than as in urlheader so that as i can access the parsedData as easily as i access fname and lname below:

    app.get("/profile/:firstname/:lastname",function(req,res){
    console.log(req.params.firstname);
    res.render("profile", {firstname : req.params.firstname,lastname : req.params.lastname}) // i want parsedData here
  });