{
  "hordeCompositions": [
    {
      "weight": 1,
      "dimensions": [
        "minecraft:overworld"
      ],
      "mobTypes": [
        {
          "id": "minecraft:zombie",
          "weight": 30,
          "spawnWithWeaponProbability": 0.015,
          "weapons": [
            {
              "itemId": "minecraft:iron_sword",
              "chance": 0.65
            },
            {
              "itemId": "minecraft:stone_sword",
              "chance": 0.35
            }
          ]
        }
      ]
    }
  ]
}