{
  "manageEntity": {
    "action": "Create",
    "entityId": "387908935",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":387908935,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Alternative\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Only Shallow\",\"duration\":257,\"audio_upload_id\":\"58cde65d098429cb2becbd22f287ba5f\",\"track_cid\":\"baeaaaiqsec2dmcnajwbcgy6orysrapjuzxkgf3xy5qhizdix7rhoq2zgvnn5a\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsed4gvphm65dqv2rdj3ec3vqgbh7yxsggn7abw3m5h4vprmqveiqlw\",\"orig_filename\":\"1.01. Only Shallow.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":114,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":770972221,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsea7eyxk2r3teyu2pkldabyonqjqh6dnmqjn5jpjzqkhnm526v4n5s\"}}",
    "nonce": "0xe3f1e03668a6ad7d5ebdf982d8ff25e23d8269bbffab67aa08f5fb8ad3da4d27",
    "signature": "0x5c25f1c8a68ce1d29d4e2e7ff0d6e32015e1aa87326f0a208db1e16b43713e3678e3223fa8850f1bc9f6898fa1075aac04eac02adc8f92d1e524fc4c4c854c531c",
    "signer": "0x286E31053F87209F966e1009BB419fb4302C7d11",
    "userId": "770972221"
  }
}