{
  "manageEntity": {
    "action": "Update",
    "entityId": "1991039548",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1991039548,\"owner_id\":90731,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Ambient\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Romantic\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Single flame\",\"duration\":199,\"audio_upload_id\":\"01KME4BR1HQX402HME9V8B98JQ\",\"track_cid\":\"baeaaaiqsednmwywua6ddb2to2locs5eynj5hw5yjmy3t2xp22wbgneozrdofu\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebbbmrvqiz7jkzmoqu4526arbf7pjbbpzb4ihci6pqynap6pccbry\",\"orig_filename\":\"Single flame.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":129,\"is_custom_bpm\":false,\"musical_key\":\"B flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0x22ca19bd05260f6600fed45d0b1e51f53689a482f9c897871e5f13fb5110df99",
    "signature": "0x37004e4d4c0f8cdb383f96c5ddcd5398059fda79ea916258ce17dc525bee2c4372d080cc41ea14c025cc894a33193eeb1450fae446447e0af7a954734a91369c1b",
    "signer": "0x35240a78aF8713dB81Cd87dFcA12C9f94d95f91b",
    "userId": "90731"
  }
}