{
  "policies": {
    "PopupBlocking": {
      "Allow": ["https://www.allow.com", "https://www.pre-existing-deny.com"]
    },

    "Cookies": {
      "Allow": ["https://www.allow.com", "https://www.pre-existing-deny.com"],

      "Block": ["https://www.deny.com", "https://www.pre-existing-allow.com"]
    },

    "InstallAddonsPermission": {
      "Allow": ["https://www.allow.com", "https://www.pre-existing-deny.com"]
    }
  }
}