[
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        "anonymous": false,
        "inputs": [
            {
                "indexed": true,
                "name": "buyer",
                "type": "address"
            },
            {
                "indexed": false,
                "name": "sold_id",
                "type": "int128"
            },
            {
                "indexed": false,
                "name": "tokens_sold",
                "type": "uint256"
            },
            {
                "indexed": false,
                "name": "bought_id",
                "type": "int128"
            },
            {
                "indexed": false,
                "name": "tokens_bought",
                "type": "uint256"
            }
        ],
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    },
    {
        "anonymous": false,
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            {
                "indexed": true,
                "name": "buyer",
                "type": "address"
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            {
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            {
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                "type": "uint256"
            },
            {
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            {
                "indexed": false,
                "name": "tokens_bought",
                "type": "uint256"
            }
        ],
        "name": "TokenExchangeUnderlying",
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    },
    {
        "anonymous": false,
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            {
                "indexed": true,
                "name": "provider",
                "type": "address"
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            {
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            },
            {
                "indexed": false,
                "name": "fees",
                "type": "uint256[4]"
            },
            {
                "indexed": false,
                "name": "invariant",
                "type": "uint256"
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            {
                "indexed": false,
                "name": "token_supply",
                "type": "uint256"
            }
        ],
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    },
    {
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                "indexed": true,
                "name": "provider",
                "type": "address"
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            {
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            },
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                "type": "uint256[4]"
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            {
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                "type": "uint256"
            }
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    },
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                "indexed": true,
                "name": "provider",
                "type": "address"
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            {
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            },
            {
                "indexed": false,
                "name": "fees",
                "type": "uint256[4]"
            },
            {
                "indexed": false,
                "name": "invariant",
                "type": "uint256"
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            {
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                "type": "uint256"
            }
        ],
        "name": "RemoveLiquidityImbalance",
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        "anonymous": false,
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            {
                "indexed": true,
                "name": "deadline",
                "type": "uint256",
                "unit": "sec"
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            {
                "indexed": true,
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    {
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        "inputs": [
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                "indexed": true,
                "name": "admin",
                "type": "address"
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    {
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                "name": "deadline",
                "type": "uint256",
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            {
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                "type": "uint256"
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        "name": "CommitNewParameters",
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                "name": "A",
                "type": "uint256"
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            {
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                "type": "uint256"
            }
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                "name": "_coins",
                "type": "address[4]"
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            {
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                "name": "",
                "type": "uint256"
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                "name": "",
                "type": "uint256"
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                "name": "i",
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                "name": "",
                "type": "uint256"
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                "type": "uint256"
            }
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        "type": "function"
    },
    {
        "constant": false,
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        ],
        "name": "exchange_underlying",
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        "type": "function"
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                "name": "_amount",
                "type": "uint256"
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            {
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    {
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                "name": "amounts",
                "type": "uint256[4]"
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    {
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        "inputs": [
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                "name": "amplification",
                "type": "uint256"
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                "name": "new_fee",
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                "name": "_owner",
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            }
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                "type": "address"
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                "type": "address"
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                "type": "uint256"
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                "name": "",
                "type": "uint256"
            }
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                "name": "",
                "type": "uint256"
            }
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                "name": "",
                "type": "uint256"
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                "name": "",
                "type": "address"
            }
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                "name": "",
                "type": "uint256",
                "unit": "sec"
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                "type": "uint256",
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                "type": "uint256"
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                "name": "",
                "type": "uint256"
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                "name": "",
                "type": "uint256"
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        "outputs": [
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                "name": "",
                "type": "address"
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        ],
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]