{
  "manageEntity": {
    "action": "Create",
    "entityId": "54757564",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":54757564,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Trance\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"test2\",\"duration\":207,\"audio_upload_id\":\"3639cdb7d6c6b39f484eb37bb2a35f3d\",\"track_cid\":\"baeaaaiqsecdhvw3sxbnr5cewfmsoh6kfmj73gdd2mv2x2uvus2ngboqonmtvs\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseaueni53rwigagctvlkrh32woxznnvcumqstwgjey6ywavhmcmy4y\",\"orig_filename\":\"test.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":145,\"is_custom_bpm\":false,\"musical_key\":\"E minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":5016987,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseckckt63udnlngfq6asmjwoh6ig7yuejppdxe2uqlezklim36hoj4\"}}",
    "nonce": "0xe4b131693932bad779b61b876f4431e0fadb96311fdaefa689469f8ab665449a",
    "signature": "0x0aee1da118bdcbd68eea59281d68cef7c899ecc76626db041be94f6e05ba66306f6cb270ceacce3ada1e4735782d9856b54872fe6756e9d931699639184d2f6d1b",
    "signer": "0xDd0b1E1Ac36008d2Eb670bdf27d60DE0330B298b",
    "userId": "5016987"
  }
}