{
  "manageEntity": {
    "action": "Create",
    "entityId": "221916982",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":221916982,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Experimental\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Ludus - performed on a sampler\",\"duration\":127,\"audio_upload_id\":\"372aeae88f03338c9bc7703c43a3f087\",\"track_cid\":\"baeaaaiqsebybalprxuy6a244z37o74opy2zuo3bwpwujisa4gqpdmptatjiu4\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseb2lee2bk4uwdh4kmaenckmxj7u2uezyfgsexbwh6xow6krbtaoiy\",\"orig_filename\":\"Y@ - Ludus - performed on a sampler by Y@ 2026-08-01 23_06.m4a\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":120,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":855397745,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebzesan6pahgyqnuegmi25hk2logmf5h5jlctsdal73fuepy7atni\"}}",
    "nonce": "0xa5b6df843d83e61b60b375a07b8034972414f3e9fa049948de707b002fbdb66a",
    "signature": "0x4e5061f5823543ac80490a93d4e4b931f284566fac8c0a2fa7c224f93be008ad49909da36e58a74ac8030ef222cb61d7c6bf0c444ffca5b491e7886c06078dc11c",
    "signer": "0x18356cfD8fCEF0CfA9c1317D9538cf9f94734021",
    "userId": "855397745"
  }
}