Synology Surveillance Station motion event to HA

I would like to do something in HA when motion is detected by the Synology Surveillance Station.

After searching found some old threads from 2017 and 2018. The Synology Surveillance Station is in the meantime changed.

I tried many things but get always errors.
I believe I have to start to tell SS to send a webhook:

When I press ‘Test Send’ I get a message: ‘Test failed. Please check the settings and try again’

Anyone was successfull to setup?