[
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "_admin",
        "type": "address"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "constructor"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": false,
        "internalType": "address",
        "name": "previousAdmin",
        "type": "address"
      },
      {
        "indexed": false,
        "internalType": "address",
        "name": "newAdmin",
        "type": "address"
      }
    ],
    "name": "AdminChanged",
    "type": "event"
  },
  {
    "anonymous": false,
    "inputs": [
      {
        "indexed": true,
        "internalType": "address",
        "name": "implementation",
        "type": "address"
      }
    ],
    "name": "Upgraded",
    "type": "event"
  },
  {
    "stateMutability": "payable",
    "type": "fallback"
  },
  {
    "inputs": [],
    "name": "admin",
    "outputs": [
      {
        "internalType": "address",
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "_admin",
        "type": "address"
      }
    ],
    "name": "changeAdmin",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [],
    "name": "implementation",
    "outputs": [
      {
        "internalType": "address",
        "name": "",
        "type": "address"
      }
    ],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "_implementation",
        "type": "address"
      }
    ],
    "name": "upgradeTo",
    "outputs": [],
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "inputs": [
      {
        "internalType": "address",
        "name": "_implementation",
        "type": "address"
      },
      {
        "internalType": "bytes",
        "name": "_data",
        "type": "bytes"
      }
    ],
    "name": "upgradeToAndCall",
    "outputs": [
      {
        "internalType": "bytes",
        "name": "",
        "type": "bytes"
      }
    ],
    "stateMutability": "payable",
    "type": "function"
  },
  {
    "stateMutability": "payable",
    "type": "receive"
  }
]