Set root node for JSON import

I have various JSON files with a root node “data” e.g.

{
   "data": [
      {
         "id": "1234",
         "name": "bla di bla",
         "start_time": "2019-01-06T20:00:00+0100",
         "end_time": "2019-12-01T23:00:00+0100",
         "description": "bla di bla",
         "cover": {
            "offset_x": 50,
            "offset_y": 50,
            "source": "https://URL_PATH/image.jpg",
            "id": "6789"
         }
      }
   ]
}

Right now I’m manually stripping the root node, but it would be nice to be able to set a root node.

Regards,
Zignature