{
  "manageEntity": {
    "action": "Update",
    "entityId": "75778",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":75778,\"owner_id\":12890,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Hardcore\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":\"All rights reserved\",\"mood\":\"Energizing\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"collaborators\":[],\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2007-01-31T12:00:00.000Z\",\"tags\":\"happyhardcore,hardcore,techno,trance,rave,90s\",\"title\":\"Epic Journey Through the Galaxy\",\"duration\":380,\"track_cid\":\"QmST4uN385JqbbJuWQpMA5VFM62MY39GQ7YbTXQCgspLmk\",\"preview_cid\":\"\",\"orig_file_cid\":\"QmST4uN385JqbbJuWQpMA5VFM62MY39GQ7YbTXQCgspLmk\",\"orig_filename\":\"Epic Journey Through the Galaxy - [Dream of Omnimaga].mp3\",\"cover_art_sizes\":\"baeaaaiqseaz3ef3ni2afml2vz555ivdswo6akune5nmzaagl7dfgecb3jj7ak\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":90.9,\"is_custom_bpm\":false,\"musical_key\":\"B minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0xf5cb5f2665c56f50c4f9725718f132d938721080f1e0ab1ec1eeb757d459078d",
    "signature": "0x5888f117a5bebb51683fe27a2e1afcad0130ce9de11d589e000a13d0085252926fd7797e0f0f681241c5fda6f80c750bc6a17fcbba2bc9f1e3790d447a8d62e21c",
    "signer": "0xb8Bf68e2681FA1A8a8ce9c78070BF9644e947378",
    "userId": "12890"
  }
}