updates.json

{
  "recordVersion": 1,
  "platforms": {
    "ios": {
      "releases": {
        "expired": {
          "expirationDate": -1,
          "notes": "Default expired version"
        }
      },
      "minVersion": "3.7.8",
      "recordVersion": 1
    },
    "android": [
      {
        "expirationDate": -1,
        "notes": "blank template expiration",
        "buildNumber": -1,
        "expirePreviousVersions": true,
        "newApiVersion": -1
      },
      {
        "expirationDate": 1492560000,
        "notes": "Example Expiration: Apr 19, 2017",
        "buildNumber": 64,
        "expirePreviousVersions": true,
        "newApiVersion": 20
      }
    ]
  }
}