Web Service that runs business processes

Hello,

We would appreciate your assistance regarding the integration of a web service to trigger a business process. 

Specifically, we would like to trigger the business process through a URL (as a web service), but rather than sending parameters via the URL or query parameters, we need to pass the required data within the body of the request in JSON format.

Considering that we have already explored using OData, we faced limitations, particularly when trying to create a new contact while first checking if the user already exists. 

Given this scenario, we believe that leveraging a business process is the best approach. 

Our goal is to avoid using a custom API with scripts or OData, and instead, utilize a business process, which can be triggered via a URL by sending the request parameters in the request body in JSON format.

Could you please guide us on how to configure the web service to accept the request body, extract the necessary parameters, and trigger the business process accordingly?

Thank you in advance for your support.

Georges Azzam