How to create a ticket - Zoho Desk api

How to create a ticket - Zoho Desk api

Hi,
      I have been trying to create a ticket using the Zoho api using the following directions located at:
https://desk.zoho.com/DeskAPIDocument#Tickets%23Tickets_Createaticket

I am passing in the orgId and Authorization toke in the header as well as the two required parameters, subject and department ID.  The issue is that I am getting a 400 error (bad request)

This is what the post looks like "https://desk.zoho.com/api/v1/tickets?subject=This is a test&departmentId=25499200000"
this is the header

and these are the prams


What all am I missing as far as creating the ticket?