A couple suggestions on how you can discover what end points to call
- While using a Network/Traffic inspector of your browser, perform the actions in the WebUI and review the requests that are made to the API
- Review the Swagger documentation
- Review Orchestrator API documentation, they may have examples in there Building API Requests
- Check out the UiPath Postman Collection for possible examples - https://postman.uipath.rocks/
provides the Model details and an example body payload.
In addition to that, UiPath has a somewhat maintained PowerShell Module
UiPath.PowerShell available with documentation and source code on Github, would be worth a look to see if it has a cmdlet for Triggers.