{
  "m": 60000,
  "data": {
    "version": 2,
    "type": "slot",
    "payload": [
      {
        "type": "linear",
        "start": 0.0,
        "duration": 30.03,
        "identifiers": [{"scheme": "urn:com:example:ads:id", "value": "example-30s-a"}],
        "tracking": [
          {"type": "impression", "urls": ["https://beacons.example.com/c/6f6e6bf3/imp"]},
          {"type": "start", "urls": ["https://beacons.example.com/c/6f6e6bf3/start"]},
          {"type": "complete", "urls": ["https://beacons.example.com/c/6f6e6bf3/done"]}
        ]
      }
    ]
  }
}