minecraft-packets/minecraft-packets/data/pc/1.9.4/from-server/multi_block_change/5.json

An easy way to query PrismarineJS/minecraft-packets

{
  "chunkX": -15,
  "chunkZ": 14,
  "records": [
    {
      "horizontalPos": 225,
      "y": 20,
      "blockId": 0
    },
    {
      "horizontalPos": 208,
      "y": 22,
      "blockId": 0
    }
  ]
}