minecraft-packets/minecraft-packets/data/pc/1.12.2/from-server/multi_block_change/1.json

An easy way to query PrismarineJS/minecraft-packets

{
  "chunkX": -24,
  "chunkZ": 21,
  "records": [
    {
      "horizontalPos": 93,
      "y": 5,
      "blockId": 0
    },
    {
      "horizontalPos": 110,
      "y": 5,
      "blockId": 0
    },
    {
      "horizontalPos": 94,
      "y": 6,
      "blockId": 0
    }
  ]
}