{
  "version": 1,
  "rules": [
    {
      "domain_suffix": [
        "signal.art",
        "signal.group",
        "signal.link",
        "signal.me",
        "signal.tube",
        "signal.org",
        "signalusers.org",
        "whispersystems.org"
      ]
    }
  ]
}