Integration with Google Chat - How? Actually it was ultra easy

@tsuji_koichi This works perfectly if I want to send notifications in a Google Chat room. Can I send notifications to individual users? I do not want to add users to the Google Chat room and notifications are individually specific. Eg. if Event A - X should be notified and if event B - Y should be notified on google chat.

Please help me understand if this is possible.

As far as I know, Google chat webhook only allows to send message to room , not to individual.