{
  "manageEntity": {
    "action": "Create",
    "entityId": "365701621",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":365701621,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Alternative\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Romantic\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"Pop,Poprock,Lofirock,Softrock,Emotional,Lovely,Sad,Love,Sadness,Feelings\",\"title\":\"not young anymore - Paper Hearts\",\"duration\":227,\"audio_upload_id\":\"a0a216ef813268789a34780abd03484a\",\"track_cid\":\"baeaaaiqsedxpjbvefewyeifn246plwpq6ymmughbw46ur7pn5vem6bz4nv7qk\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseay7wjhdbvhww3arhfvbzmt2bsf3xbwwuwffromx5vips76cyfwds\",\"orig_filename\":\"not young anymore - Paper Hearts.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\":\"F minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":213442003,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebmjru34bprp7qmq3b5bsqaqnjfaromkkpnlbeiyjuztj33d6ivhe\"}}",
    "nonce": "0xe567bc8abd5a0b46faac7392e7b1d5882a83bae737e83c81c1b94f82016c18e7",
    "signature": "0x55e6beb6b10d2f87d4c01473abb1510d92dbc2b8ed2614dadc210c8a1432d34c64df06095749ac436474c66872ec8707ffd846b57b35b4c03dea2f9ee0698cf71b",
    "signer": "0xB1Ed2671bb87B6884ac7095AFfd66D21BDa1B878",
    "userId": "213442003"
  }
}