{
    "tile_processors": [
      {
        "type": "leveled",
        "levels": [
          {
            "level": 0,
            "type": "weighted_target",
            "target": "ispawner:spawner",
            "output": {
              "ispawner:spawner{ Inventory: { Stacks: [ {id: \"minecraft:villager_spawn_egg\", Count: 1}, {id: \"minecraft:zombie_villager_spawn_egg\", Count: 1} ] } }": 1
            }
          }
        ]
      }
    ]
  }