{
  "manageEntity": {
    "action": "Create",
    "entityId": "286668762",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":286668762,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Melancholy\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"蝕光6:4\",\"duration\":181,\"audio_upload_id\":\"c8dd4563cb7ffde34f375e48c99b59df\",\"track_cid\":\"baeaaaiqsecr6shnbyomszq43l67esbhle7zvl7ercvggnpbr4or4ket3jo3ys\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseb3ajtfqhj7ff7fk243m7l6v7fknosdzmvuyx6jdlxjy25iogzs7s\",\"orig_filename\":\"蝕光6:4.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":90,\"is_custom_bpm\":false,\"musical_key\":\"C minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":715573876,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseaa45npuwxhidqmx3f5hy2fshjinix4km5vtkxmm7gwgvnpxkmz4m\"}}",
    "nonce": "0xcc5474e0f693a15888ef303ac484437bf92e7c31bf60a426bc2b13aa143fd678",
    "signature": "0xa505533f4fa631a1cd261ce966e57570124af407aa094b9711e78f9795fb68920d24bce07246ce521d27c916bbedef4800bdd3e904b5178d9b1c7b7ebb8df48b1c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}