{
  "manageEntity": {
    "action": "Create",
    "entityId": "749356974",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":749356974,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Cool\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2017-08-18T05:00:00.000Z\",\"title\":\"Stars\",\"duration\":274,\"audio_upload_id\":\"e857cc467fc6b2c8199bb7d021e37af6\",\"track_cid\":\"baeaaaiqsecdyugglvhgqzy2ydqieigm5i2jlz4ra7l5zzr2c5pz5q4l7vfbh6\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsea4lsmkjhurw7ddabtjk6qav36kkc3bwwdtj2tlspphhdwppe5wis\",\"orig_filename\":\"[RoL-E12] Zirex - Stars.wav\",\"is_downloadable\":true,\"is_original_available\":false,\"is_playlist_upload\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":145,\"is_custom_bpm\":false,\"musical_key\":\"C minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":753406205,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebjz3jxkuvlke4dcregnbiljk5cbrtztxpcrrej6l4ui4iy2eu53y\"}}",
    "nonce": "0x1686d81f59ee50216832db4885808b370294ae9a0d0f6b1bccb57f2631bf2c6b",
    "signature": "0xff5c9540caa9556cebb257204463b3125688a3f9f910b2b6b75ffedd3fb3678b461073865a213591767ba7ebcd47af17b9bae44fa09209ba437473ea8b7330bc1c",
    "signer": "0xA78Fd746fAA824dCb68b68CC13fA9812a1ff2069",
    "userId": "753406205"
  }
}