{
  "manageEntity": {
    "action": "Create",
    "entityId": "1940274947",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1940274947,\"description\":\"demo 04/2026\",\"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\":\"Fiery\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Nirvana\",\"duration\":250,\"audio_upload_id\":\"2b89ad305e6fd7a679a728d94be194dc\",\"track_cid\":\"baeaaaiqsecdbx2jmxctv6xbkf3bvzve72gyladghd53gsa3yhnad34utd3jmi\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecbidq2qwljupsfier35ofy7e2ofdxirqupen4kqehrdhwxu4x76s\",\"orig_filename\":\"nirvana (Mastered with Aurora at 50pct).wav\",\"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\":\"C minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":828368024,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsec3ejikt7uo7zhfkbuky7fuvnwnqrejnnppom7hd7lj4n7il4xtoc\"}}",
    "nonce": "0x69505fa73affbd50347ef2afb8181327565fd038a7a17bf015629791ecb29c26",
    "signature": "0x6520afa8002b393da91703c5fc94601e96f218c43d233b023537079fbb6c32ed305a043bd4b8ffc1921403acbdf47250aee2f864cff3bb4563a342cad049c8501c",
    "signer": "0xc8c4f61F41Ee9F540C9b6b684D16ef071F16789B",
    "userId": "828368024"
  }
}