chromium/chromeos/components/test/data/onc/tether.onc

{
  "Type": "Tether",
  "Name": "Tether Network",
  "IPAddressConfigType":"DHCP",
  "NameServersConfigType":"DHCP",
  "Tether": {
    "BatteryPercentage": 85,
    "Carrier": "Project Fi",
    "HasConnectedToHost": true,
    "SignalStrength": 75
  }
}