How can I post only the specific field data to a form action?

I am attempting to send/post specific field data from a form to a quoting application.  I am using the Thank You page modification to do this -- this portion works as expected.   However, when inspecting the data that is being posted (using Requestb.in), I noticed a number of additional fields are included, e.g. formid, IP address, etc.  This results in the quoting application's inability to generate the requested quotes.  For clarification, I have provided an example of the correct string to be posted:

zipcode=89052&age=65&sex=male&radiobutton1=non-tobacco&button=Get+Quotes

Thank you for your assistance.

We do not have an option to control the post data content. You may need to process the data with a custom script before posting it to your application.

It might be possible to use Zapier integration for that purpose.

Zapier: Send data from a webhook through a new webhook

Zapier: Create Webhook post from new JotForm submissions

If you need any further assistance, please let us know.