{
  "manageEntity": {
    "action": "Create",
    "entityId": "871890505",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":871890505,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":false,\"play_count\":false,\"remixes\":true},\"genre\":\"Hip-Hop/Rap\",\"isrc\":null,\"is_unlisted\":true,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"09 Восени Cергій Товстолузький mix\",\"duration\":237,\"audio_upload_id\":\"813d4be34f96e9720204d8a7b1d263fc\",\"track_cid\":\"baeaaaiqseckdzlpkfdrobw5sqxjokimgi3h6o6rtsjbnhyn7heqr6oywi5ja4\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebk6sdoibw4doyh7wqmdwm5ilhde4cmsbuzo6veg6wao6ywzm4cyc\",\"orig_filename\":\"09 Восени Cергій Товстолузький mix.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":140,\"is_custom_bpm\":false,\"musical_key\":\"E minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":784506004,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseb4hasq7wu4e4z4ak4icpnsk53nm4xp7jl6x5wkwve7hhvd5jzy3i\"}}",
    "nonce": "0x6f3f49bee344c81c3f619e44dc025af02d0e126fde5ec743d4c1f4b4c2723b99",
    "signature": "0x757f558de4b5ff3dd47cba773cd7436472ca59e3072ef2e7419d7942a262c22625aa879e80a230bb4beb3baa69f7750ecae9e987db2ace0e23399e708b2e0dff1c",
    "signer": "0x3B446829846E4Dff44d7a596d5B5E2e7F6f2A2F9",
    "userId": "784506004"
  }
}