{
  "manageEntity": {
    "action": "Create",
    "entityId": "401343390",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":401343390,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Metal\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Gritty\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Tolling Bells\",\"duration\":300,\"audio_upload_id\":\"ccdb878b1acd7ead1ca063357cd62ebc\",\"track_cid\":\"baeaaaiqseaz3yzrv24rkm5nnvts5kovmqww7lc76lv2eojhwnetbcfa7x56fm\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecd356gevb2zuxeggaqvwvgxorjo46wvjkzsl5vt66ammjoho7ney\",\"orig_filename\":\"Tolling Bells.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":118,\"is_custom_bpm\":false,\"musical_key\":\"E minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":49752,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsectocidxyvz2262sf6sgcn7pe2gi4wemilurixz75rgzkzmtshcwu\"}}",
    "nonce": "0xf8e23858cca6a5e69e89167ade10fb2ef560f1094a0879a4a7003f8b0a408437",
    "signature": "0x43ff08a913364c923053bfd811aafd6dc0a0938bf90394e3ecb229289923f4a7542a314662e9fe45750bded9a0e16894a397ae09ace106d20004768e61d7ae211c",
    "signer": "0xECc843144030A4670C16284591878B8526bc5dD9",
    "userId": "49752"
  }
}