{
    "1": {
        "method": "changeColumn",
        "params": [
            "nexus_invoices",
            "i_total",
            {
                "name": "i_total",
                "type": "DECIMAL",
                "length": 20,
                "decimals": 2,
                "allow_null": false,
                "default": 0
            }
        ]
    }
}