{
"manageEntity": {
"action": "Create",
"entityId": "15156139",
"entityType": "Track",
"metadata": "{\"cid\":\"\",\"data\":{\"track_id\":15156139,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Pop\",\"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\":\"消し去りたいのは / Welza\",\"duration\":135,\"audio_upload_id\":\"8939fc9c75b8ef00c29fbc269f89a78a\",\"track_cid\":\"baeaaaiqsec3dipjet3hqbe74mcrea7ujg33qx2jvpaipwhlskru5o7ks75qnc\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecgwws7kd5gvgmoejqnj3eowvxbtswvvzyu6yumaj5ssl66vm7q4g\",\"orig_filename\":\"☆消し去りたいのは。.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":80,\"is_custom_bpm\":false,\"musical_key\":\"E minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":392916338,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsedtmcr3wgau4gn5ltbfxmvnhatsiqkmjvbljidyak4a3u4q4u4yso\"}}",
"nonce": "0x0acf6f1f9127b2ec16022606478d68cbbcd7260985d024411d272a94715b4f58",
"signature": "0xb702e760e2ad7c4e2b1e89d940367a86f47f8cc32eb5f905e33231e8750d7dd17e5a6bd908bcbd08a59368f1d2b8bb1457786ba5b31737b54442a3f5bf7feb9c1c",
"signer": "0x654f1b2DCF5eE0f42af2618ba269C1C8f8327BCA",
"userId": "392916338"
}
}