osu/osu.Game.Rulesets.Mania/Resources/Testing/Beatmaps/mania-samples-expected-conversion.json

{
  "Mappings": [{
    "StartTime": 500.0,
    "Objects": [{
      "StartTime": 500.0,
      "EndTime": 1500.0,
      "Column": 0,
      "NodeSamples": [
        ["normal-hitnormal"],
        []
      ]
    }]
  }, {
    "StartTime": 2000.0,
    "Objects": [{
      "StartTime": 2000.0,
      "EndTime": 3000.0,
      "Column": 2,
      "NodeSamples": [
        ["drum-hitnormal"],
        []
      ]
    }]
  }]
}