{
  "experiment": "F",
  "payload_family": "alpha",
  "payload_version": 1,
  "records": [
    {
      "key": "north",
      "value": 17
    },
    {
      "key": "south",
      "value": 29
    },
    {
      "key": "east",
      "value": 41
    }
  ]
}