{
  "title": "Spotify Track Structure",
  "description": "Hierarchical field map for the Spotify Track object",
  "type": "object",
  "fields": [
    {"name": "id", "type": "string", "description": "22-character Spotify ID"},
    {"name": "uri", "type": "string", "description": "spotify:track:{id}"},
    {"name": "href", "type": "string", "format": "uri", "description": "API endpoint URL"},
    {"name": "name", "type": "string", "description": "Track title"},
    {"name": "type", "type": "string", "enum": ["track"]},
    {"name": "duration_ms", "type": "integer", "description": "Duration in milliseconds"},
    {"name": "explicit", "type": "boolean"},
    {"name": "is_playable", "type": "boolean"},
    {"name": "is_local", "type": "boolean"},
    {"name": "popularity", "type": "integer", "range": [0, 100]},
    {"name": "preview_url", "type": "string", "description": "30-second MP3 preview URL"},
    {"name": "track_number", "type": "integer"},
    {"name": "disc_number", "type": "integer"},
    {
      "name": "external_ids",
      "type": "object",
      "fields": [
        {"name": "isrc", "type": "string", "description": "International Standard Recording Code"},
        {"name": "ean", "type": "string"},
        {"name": "upc", "type": "string"}
      ]
    },
    {
      "name": "external_urls",
      "type": "object",
      "fields": [
        {"name": "spotify", "type": "string", "format": "uri"}
      ]
    },
    {
      "name": "artists",
      "type": "array",
      "items": {
        "type": "object",
        "fields": [
          {"name": "id", "type": "string"},
          {"name": "uri", "type": "string"},
          {"name": "name", "type": "string"},
          {"name": "type", "type": "string"},
          {"name": "external_urls", "type": "object"}
        ]
      }
    },
    {
      "name": "album",
      "type": "object",
      "fields": [
        {"name": "id", "type": "string"},
        {"name": "uri", "type": "string"},
        {"name": "name", "type": "string"},
        {"name": "album_type", "type": "string", "enum": ["album", "single", "compilation"]},
        {"name": "release_date", "type": "string"},
        {"name": "total_tracks", "type": "integer"},
        {"name": "images", "type": "array"},
        {"name": "artists", "type": "array"}
      ]
    },
    {"name": "available_markets", "type": "array", "items": "string", "description": "ISO 3166-1 alpha-2 market codes"}
  ]
}