craft.nft

{
  "name": "categoryset",
  "base": "",
  "fields": [
    {
      "name": "collection_name",
      "type": "name"
    },
    {
      "name": "category_name",
      "type": "string"
    },
    {
      "name": "category_id",
      "type": "uint64"
    }
  ]
}