This gives most of the device info. The GET parameter `param` is a comma separated list of json keys to fetch. Currently, these params are known: `version,audio,name,build_info,detail,device_info,net,wifi,setup,settings,opt_in,opencast,multizone,proxy,night_mode_params,user_eq,room_equalizer,sign,aogh,ultrasound,mesh` Nested items can also be filtered using the dot notation. Example: `audio.digital` The `options` GET parameter is always set to `detail` or `detail,sign`. `sign` signs the `nonce` and returns some value. The `nonce` GET parameter is an integer value signed with needed (see `option` parameter above).