{
  "format_version": "1.10.0",
  "minecraft:block": {
    "description": {
      "identifier": "customblocks:customblocks_test_mobspawner1",
	  "base_block": "mob_spawner",
      "category": "custom"
    },
    "components": {
	  "netease:mob_spawner": {
	    "type": "neteasebiomes:dm5_polar_bear"
	  }
    }
  }
}