{
  "manageEntity": {
    "action": "Update",
    "entityId": "509850606",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":509850606,\"owner_id\":707342168,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Rock\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":\"Attribution-NonCommercial-NoDerivs CC BY-NC-ND\",\"mood\":\"Peaceful\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2026-03-28T18:49:22.000Z\",\"tags\":\"\",\"title\":\"Les Racines du Futur (5.5)\",\"duration\":276,\"audio_upload_id\":\"089ddb4279bbba06f62bdb62b1df6fd7\",\"track_cid\":\"baeaaaiqseafvfyhnscrsrtk3e2icjgwcy4ly4lhu6xrtagz4dyrrbdnzjvdl6\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseafvk5kjwxdade4pygdr3xq3gij4uwtzoxowjtx6pw3c7exkrpvje\",\"orig_filename\":\"Les Racines du Futur (5.5).mp3\",\"is_downloadable\":true,\"is_original_available\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":132,\"is_custom_bpm\":false,\"musical_key\":\"F minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0x95652d5fceeb20138024c37dadd9ca5817681de235ce92ccfeb687a98f01de29",
    "signature": "0xfc3d76812a36e52079cd4f1cc84194095da30ca78616589b39d5560cdc4f6ec844e6f8e679ebef24fd8c8ea323a4eb28bd7a2e32b3a955233f55adc4667b7ff81b",
    "signer": "0x98f216DceD264Ad58f00471D430cf2F978A29fe7",
    "userId": "707342168"
  }
}