lse,
        "stateMutability": "view",
        "type": "function"
      },
      {
        "constant": false,
        "inputs": [{
          "name": "sig",
          "type": "bytes"
        },
        {
          "name": "to",
          "type": "address"
        },
        {
          "name": "value",
          "type": "uint256"
        },
        {
          "name": "fee",
          "type": "uint256"
        },
        {
          "name": "seq",
          "type": "uint256"
        },
        {
          "