{
  "chancecubes:tnt_structure": {
    "chance": -30,
    "Area": [
      {
        "xSize": 3,
        "ySize": 1,
        "zSize": 3,
        "block": "minecraft:tnt",
        "xOff": -1,
        "yOff": 0,
        "zOff": -1,
        "falling": true,
        "delay": 0,
        "causesUpdate": false,
        "relativeToPlayer": false
      },
      {
        "xSize": 3,
        "ySize": 1,
        "zSize": 3,
        "block": "minecraft:redstone_block",
        "xOff": -1,
        "yOff": 1,
        "zOff": -1,
        "falling": true,
        "delay": 40,
        "causesUpdate": true,
        "relativeToPlayer": false
      }
    ]
  }
}