{
  "manageEntity": {
    "action": "Create",
    "entityId": "453687519",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":453687519,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Experimental\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Tomorrow Never Knows\",\"duration\":177,\"audio_upload_id\":\"10e37c8fda8010806840b4c22b8f986b\",\"track_cid\":\"baeaaaiqsearbsznfvaeckg3es2vk6kkpuxnbditvukxwiosavlgyhkjbn4xxi\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecpff2rfca53jelnvz2jhgqzvvmoe2kwmorydrkunsi24b3jzosee\",\"orig_filename\":\"14 The Beatles - Tomorrow Never Knows.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":127,\"is_custom_bpm\":false,\"musical_key\":\"C major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":770972221,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebrmhtyweq27x34cd7ys2nlwnvpbikrgapygxjel2ivo64d3eipiw\"}}",
    "nonce": "0x02ad94daa60a8aeb7ba7cece31f7bd27d563f8c48b6aebc31044e6a060f8fa73",
    "signature": "0x11f7808d3f9e843f3ae5fb9ea890fb7a6231a3a1f1a4d0ad5c8739d3c716ded20cf74d9e29df09c13daf40fb6d5609089f1b8b3f320b779edc9d1f8096bb94641b",
    "signer": "0x286E31053F87209F966e1009BB419fb4302C7d11",
    "userId": "770972221"
  }
}