[
  "constructor(address,address,bytes) payable",
  "event AdminChanged(address,address)",
  "event BeaconUpgraded(address indexed)",
  "event Upgraded(address indexed)",
  "function admin() returns (address)",
  "function changeAdmin(address)",
  "function implementation() returns (address)",
  "function upgradeTo(address)",
  "function upgradeToAndCall(address,bytes) payable"
]