minecraft-packets/minecraft-packets/data/pc/1.15.2/from-server/multi_block_change/5.json

An easy way to query PrismarineJS/minecraft-packets

{
  "chunkX": 10,
  "chunkZ": -21,
  "records": [
    {
      "horizontalPos": 101,
      "y": 27,
      "blockId": 42
    },
    {
      "horizontalPos": 62,
      "y": 16,
      "blockId": 36
    }
  ]
}