{
  "manageEntity": {
    "action": "Create",
    "entityId": "715176666",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":715176666,\"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\":\"Melancholy\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"道行天替：迎新\",\"duration\":178,\"audio_upload_id\":\"ea152407b2d84f3f1e23d216c993fd4a\",\"track_cid\":\"baeaaaiqseazb4vdy4qztymlpnwdmzpdzwxnkvp5j7bypbfbtpchwrbjvrzpdy\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsed2wdvviye3jgof56jcjw7tqwyumj4ziflvhkh2ldehj6ujedicly\",\"orig_filename\":\"道行天替：迎新.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":136,\"is_custom_bpm\":false,\"musical_key\":\"E flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":947140631,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsedo7olvkizkclmxfkdudngw3ozu5btjpfq775aulmqs7zuliyhgpq\"}}",
    "nonce": "0x16c5eeaf99a2db1b494fe9432abfd58d56a644b153f90a7a954a7ddd97658735",
    "signature": "0xbb80b01e31b21fc1bc8a06c0308f41de5eb0f3f235d963ca911b1cde329271451c960a6415cb9a69847816df48c9abd60ca71f9cd9e23377c6e26d4110d1f0be1b",
    "signer": "0xA169dE4d8c253bf06970019E3835E60a57cBeb25",
    "userId": "947140631"
  }
}