{
  "type": "minecraft:smithing_transform",
  "base": {
    "item": "minecraft:leather_chestplate"
  },
  "addition": {
    "tag": "fun_filled:chains"
  },
  "result": {
    "item": "minecraft:chainmail_chestplate"
  },
  "template": {
    "tag": "forge:leather"
  }
}