{
  "id": "minecraft:iron_helmet",
  "modifiers": [
    {
      "type": "append",
      "attribute": "minecraft:generic.movement_speed",
      "value": -0.01,
      "operation": "MULTIPLY_TOTAL",
      "uuid": "70de7171-4d0b-471e-82ef-e01d832e89ea"
    },
    {
      "type": "append",
      "attribute": "minecraft:generic.attack_damage",
      "value": 0.15,
      "operation": "ADDITION",
      "uuid": "9c0a0440-af55-4333-a63a-5c7d0e3c2225"
    }
  ],
  "equipment_slot": "HEAD"
}