Device REST command

Hi
I am trying to control Sonoff switch with HomeKit firmware. It doesn’t support MQTT, only REST API is available. So I have enabled REST API on Sonoff switch, but I don’t know how to add it to Openhab.
The command to Turn OFF is:
curl -X PUT -d ‘{“characteristics”:[{“aid”:1,“iid”:9,“value”:false}]}’ http://10.0.0.63:5556/characteristic
The command to Turn ON is:
curl -X PUT -d ‘{“characteristics”:[{“aid”:1,“iid”:9,“value”:true}]}’ http://10.0.0.63:5556/characteristic
The command to get status is:
curl -X GET http://10.0.0.63:5556

those command work from terminal, but I don’t know how to convert them to item definitions in Openhab.

Anyone can help?

Welcome.
Perhaps this?