publish any update on subtree over http

Is there possibility to set the notification stream of changes happening on particular subtree in Devices tree?
The use case I got is integration with Apple HomeKit using homebridge software. Basically homebridge is using REST API of bOS to control devices, but the feedback it is getting is made using the poll-behavior: it continuously request bOS to refresh the status of each device. Would be much more effective if the bOS could push the notification over HTTP to homebridge on any change. I potentially could make a HTTP device which will be triggered on change, but this is like lots of configuration to be done as each state has to be added separately.