Store json in form

Hello,

I need your advice team.

Situation is:

Step1 My customer ads data When he submits button, I am giving request to 3 part service to get more details. When I am getting the response. I am holding this data in Vue. In other words when I am getting ajax response this.vehicle = vehicle.body;

Step2 In this step customer have to check is the data correct and confirm if is correct. if is not correct he starts from step1 if is correct he submits form and I am saving all this data in db.

My question how to take this vue object (vehicle)? Save in hidden input? Session? or any other way?