{
  "client": {
    "active_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ],
    "client_id": "sendspin-js-client-id",
    "name": "sendspin-js-client",
    "supported_roles": [
      "player@v1",
      "controller@v1",
      "metadata@v1"
    ]
  },
  "discovery_method": "registry_fallback",
  "implementation": "aiosendspin",
  "initiator_role": "server",
  "metadata": {
    "expected": {
      "album": "Protocol Fixtures",
      "album_artist": "Sendspin",
      "artist": "Sendspin Conformance",
      "artwork_url": "https://example.invalid/almost-silent.jpg",
      "progress": {
        "playback_speed": 1000,
        "track_duration": 180000,
        "track_progress": 12000
      },
      "repeat": "all",
      "shuffle": false,
      "title": "Almost Silent",
      "track": 1,
      "year": 2026
    }
  },
  "peer_hello": {
    "payload": {
      "client_id": "sendspin-js-client-id",
      "device_info": {
        "manufacturer": "Unknown",
        "product_name": "Web Browser",
        "software_version": "Node.js/22"
      },
      "name": "sendspin-js-client",
      "player@v1_support": {
        "buffer_capacity": 5242880,
        "supported_commands": [
          "volume",
          "mute"
        ],
        "supported_formats": [
          {
            "bit_depth": 16,
            "channels": 2,
            "codec": "pcm",
            "sample_rate": 48000
          },
          {
            "bit_depth": 16,
            "channels": 2,
            "codec": "pcm",
            "sample_rate": 44100
          }
        ]
      },
      "supported_roles": [
        "player@v1",
        "controller@v1",
        "metadata@v1"
      ],
      "version": 1
    },
    "type": "client/hello"
  },
  "preferred_codec": "none",
  "role": "server",
  "scenario_id": "server-initiated-metadata",
  "server_id": "aiosendspin-server",
  "server_name": "aiosendspin server",
  "status": "ok"
}