[
  {
    "weight": 1,
    "value": {
      "template": "the_vault:vault/rooms/special/boss1",
      "palettes": [ "the_vault:special/boss/boss1" ]
    }
  },
  {
    "weight": 1,
    "value": {
      "template": "the_vault:vault/rooms/special/boss2",
      "palettes": [ "the_vault:special/boss/boss2" ]
    }
  }
]