{
  "manageEntity": {
    "action": "Create",
    "entityId": "1874428750",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1874428750,\"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,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"sigmamusicart-jazz-lounge-relaxing-background-music-412597\",\"duration\":104,\"audio_upload_id\":\"9894cccfb9bf07ad50e46c3f6c9ed79c\",\"track_cid\":\"baeaaaiqsed65eh26wddqj653gym7quhyaxzmijn7fpcpaqnkqehbsn3ukobi2\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseadkggt5574tfkob4j4g7vrnoifgtwkwx7onw3dteexy465fs2so4\",\"orig_filename\":\"sigmamusicart-jazz-lounge-relaxing-background-music-412597.mp3\",\"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\":\"G minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":841622517,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsedtegqxaibydne4kgrlsiitl2k5gibtanwaspzpj2fp7ylyo5e7ts\"}}",
    "nonce": "0xd2747ce68738b606ade4b9bc12bef6f56d845106e102a90eebebbada72080052",
    "signature": "0x6bc85b84bb8d3d7b7f4bbed05a6b96ae92548bca3348b185d4a87644973caeac7ac5522bb61fb004fe71aef95bca5a4c6692fd184c1d744fdfa2fd4cda5da5aa1c",
    "signer": "0xb0ec0570211d20D71D52f91ea6744C062a204F3A",
    "userId": "841622517"
  }
}