[
  {
    "model": "fixtures.naturalkeything",
    "fields": {
      "key": "t1",
      "other_things": [
        ["t2"], ["t3"]
      ]
    }
  },
  {
    "model": "fixtures.naturalkeything",
    "fields": {
      "key": "t2"
    }
  },
  {
    "model": "fixtures.naturalkeything",
    "fields": {
      "key": "t3"
    }
  }
]
