{
    "tile_processors": [
        {
            "type": "leveled",
            "levels": [
                {
                    "level": 0,
                    "type": "spawner",
                    "target": "ispawner:spawner",
                    "output": [
                        {
                            "elements": {
                                "the_vault:pirate_bruiser_guardian": 70,
                                "the_vault:pirate_arbalist_guardian": 30
                            },
                            "weight": 1
                        }
                    ]
                }
            ]
        }
    ]
}