{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    "ooo",
    "omo",
    "odo"
  ],
  "key": {
    "o": {
      "item": "minecraft:leather"
    },
    "m": {
      "item": "minecraft:chest"
    },
    "d": {
      "item": "minecraft:iron_ingot"
    }
  },
  "result": {
    "item": "mmorpg:backpack/normal"
  }
}