Edit

Optimised request: client has item groups list of specific version already and asks about the changed one: call:

				
					{
    "id": "__ID__",
    "api": "1.0",
    "method": "hub.scenes.device.groups.list",
    "params": {
        "version": 24
    }
}
Edit 
				
					{
    "api": "1.0",
    "error": null,
    "id": "633216245ab7be12415365c4",
    "result": {
    "version": 24
    }
}

Note: By default, returns full list of item group objects. Note: The “version” can be used to avoid passing data from a controller to a client, if the client already has the same version of data.