[
  "event OperatorTransferred(address indexed,address indexed)",
  "event OwnershipTransferred(address indexed,address indexed)",
  "function isOperator() view returns (bool)",
  "function operator() view returns (address)",
  "function owner() view returns (address)",
  "function renounceOwnership()",
  "function transferOperator(address)",
  "function transferOwnership(address)"
]