{
    "queue_lock": {
        "column": {
            "id": true,
            "message_code": true,
            "created_at": true
        },
        "constraint": {
            "PRIMARY": true,
            "QUEUE_LOCK_MESSAGE_CODE": true
        }
    },
    "queue_poison_pill": {
        "column": {
            "version": true
        }
    }
}