[
  {
    "model": "tests.SecondaryTestModel",
    "pk": 1,
    "fields": {
      "value": 100,
      "created_date": "2018-01-01",
      "created": "2018-02-01 00:00:00"
    }
  },
  {
    "model": "tests.SecondaryTestModel",
    "pk": 2,
    "fields": {
      "value": 200,
      "created_date": "2018-02-01",
      "created": "2018-02-01 00:00:00"
    }
  }
]