How to Make POST Call?

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: 

Please share thoughts.

San, you could use a REST Model to make the request and have the Model set to “Load Model data on page load”.

See this tutorial on using REST Models with Skuid: