{
    "groups": [
        { "frames": [ {"size": "8 x 8"} ],
          "ground": "4 x 4",
          "name": "n"
        }
    ],
    "nframes": 1,
    "object_name": "test-8x8",
    "pixel_size": "8 x 8",
    "scale": [ "factor", 1 ]
}