{
  "manageEntity": {
    "action": "Create",
    "entityId": "1422821716",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1422821716,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Experimental\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"No Brass Band\",\"duration\":190,\"audio_upload_id\":\"62b3ec6cad8c85f45ba437b061b1c2db\",\"track_cid\":\"baeaaaiqsecvbderdxssuszxd3lwl5kafqeo4owons2gvkmuvzt52z6cckni7e\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebt7mv72ftc6apnijffjdiwzfcwxyg37acaa5n5gdf56ccj7qxrei\",\"orig_filename\":\"No Brass Band.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":81,\"is_custom_bpm\":false,\"musical_key\":\"A flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":974702,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsedekaj5jcx52bj24isvfsti4ixtrinafc6ae4cmwqbcugtuqkyuza\"}}",
    "nonce": "0x2b0f5f1a40e5173422265cf9d6dd79da293f093e3f17de8f40047de319c23c33",
    "signature": "0x4abeba66fac5e05668d9ce23df4738e95e993ce963f892abf27c4ed4472dcd6e6d79dc63f4f6ec4e7d6026dc788561833d8bb7a644b92a61f1f2e550c07e08cc1c",
    "signer": "0xE1c9AFB78A96B47327FC435D8c3D4834BC6A9141",
    "userId": "974702"
  }
}