[
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "_amount",
        "type": "uint256"
      }
    ],
    "name": "enter",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  },
  {
    "constant": false,
    "inputs": [
      {
        "internalType": "uint256",
        "name": "_share",
        "type": "uint256"
      }
    ],
    "name": "leave",
    "outputs": [],
    "payable": false,
    "stateMutability": "nonpayable",
    "type": "function"
  }
]