minecraft-packets/minecraft-packets/data/pc/1.10.2/from-server/set_slot/3.json

An easy way to query PrismarineJS/minecraft-packets

{
  "windowId": 0,
  "slot": 36,
  "item": {
    "blockId": 368,
    "itemCount": 1,
    "itemDamage": 0
  }
}