[
  {
    "index": 1,
    "startMilliseconds": 0,
    "endMilliseconds": 700
  },
  {
    "index": 2,
    "startMilliseconds": 700,
    "endMilliseconds": 1400
  },
  {
    "index": 3,
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    "endMilliseconds": 2000
  }
]