chromium/chromeos/components/test/data/onc/policy/policy_cellular_with_iccid.onc

{
  "NetworkConfigurations": [
    {
      "GUID": "policy_cellular2",
      "Type": "Cellular",
      "Name": "Managed cellular",
      "Cellular": {
        "AutoConnect": true,
        "SMDPAddress": "LPA:1$SMDP.GSMA.COM$00000-00000-00000-000-0001",
        "ICCID": "1000000000000000000",
      }
    }
  ],
  "Type": "UnencryptedConfiguration"
}