{
  "type": "minecraft:entity",
  "pools": [
    {
      "rolls": 1,
      "entries": [
        {
          "type": "minecraft:item",
          "name": "minecraft:slime_ball",
          "functions": [
            {
              "function": "minecraft:set_nbt",
              "tag": "{CustomModelData:6001,death_mark:1b}"
            },
            {
              "function": "minecraft:copy_nbt",
              "source": "this",
              "ops": [
                {
                  "source": "Tags",
                  "target": "Tags",
                  "op": "replace"
                }
              ]
            }
          ]
        }
      ]
    }
  ]
}
