I am trying to make first POST call to an endpoint on page load but not sure where to define body? This is not user facing API. I tried to create UI Only model and added the fields. 

Example: On page load, a POST call need to made with below parameters and in response we will get confirmation. Later I would need POST call on an action as well.

Request Parameters: 

• userid: xyz


• name: xyzid


• email: xyz@example.com