https://www.tradingview.com/blog/en/webhooks-for-alerts-now-available-14054/
Seems open-ended has also been added, which lack was the cause of the abandonment.
Implementation details can be sourced from the similar work:
Do note that I currently do not have the bandwidth to renew this project for WebHook support. If you would like to do it and send a PR that would be great. In the meantime, consider using Crypto-ML instead.