post
https://api.ultroncloud.com/usr/v5/TestWebhookURL
This is a development helper function that enables developers to:
* Test webhook endpoint connectivity
* Verify webhook signature validation
* See the actual format of webhook events with real device data
You must have at least one activated device in your account to use this API.
The statusCode from the response should be 200 (OK).
Please refer to App Webhook Guide for more information about webhook.