Call
Set logging level to , turn logs colouring on, indent JSON objects using 8 spaces for maximum JSON objects pretty-printing. 
				
					{
    "id": "_ID_",
    "method": "hub.log.local.set",
    "params": {
        "severity": "DEBUG",
        "color": true,
        "indent": 8
    }
}
For every changed hub setting the hub.setting.updated broadcast will occur.