{
    "1": {
        "method": "addColumn",
        "params": [
            "core_members",
            {
                "name": "conv_password",
                "type": "VARCHAR",
                "length": 255,
                "null": true,
                "default": null
            }
        ]
    },
    "2": {
        "method": "addColumn",
        "params": [
            "core_members",
            {
                "name": "conv_password_extra",
                "type": "VARCHAR",
                "length": 255,
                "null": true,
                "default": null
            }
        ]
    }
}