{
  "manageEntity": {
    "action": "Create",
    "entityId": "338186345",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":338186345,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"R\u0026B/Soul\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Fiery\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"盤根錯節\",\"duration\":139,\"audio_upload_id\":\"9a94073421097c3b26332193f640fb42\",\"track_cid\":\"baeaaaiqsedkc6e2yhdmrd4l63zetffizp3oz3en54fnptbqs72lhpnypq4aem\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedyre4thizj3iw7zpt6deamora5c3ymhbnth65vfpgpypqejzpgkw\",\"orig_filename\":\"盤根錯節.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":151,\"is_custom_bpm\":false,\"musical_key\":\"E flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":947140631,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseddk6yfiiden7f3xczmw4kb466osqzjmeromz2mec7l4sof4tciqa\"}}",
    "nonce": "0x500b4b9029ed8d1dcd746abde83ee0813440cefcc77f6c0f850bcc032e93d01e",
    "signature": "0x40ba2423d40ef5238f9ba52be389208c0b86f90df3d62262c4f3907f1dba6a4c35f3c70072396f33f45e3ce36a064cff1ca38dd382a59c65a65d0c2a64d212821b",
    "signer": "0xA169dE4d8c253bf06970019E3835E60a57cBeb25",
    "userId": "947140631"
  }
}