{
  "manageEntity": {
    "action": "Create",
    "entityId": "2142315093",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":null,\"data\":{\"track_id\":2142315093,\"title\":\"7455f6391c7c6b7cb0d45e96eb425ae2\",\"genre\":\"Electronic\",\"is_unlisted\":true,\"is_downloadable\":false,\"is_original_available\":false,\"comments_disabled\":true,\"access_authorities\":null,\"field_visibility\":{\"genre\":false,\"mood\":false,\"tags\":false,\"share\":false,\"play_count\":false,\"remixes\":false},\"owner_id\":715160400,\"track_cid\":\"baeaaaiqsebszics2kindvdpjb6usnpw6psoe2ynwcff62oqwaas34mhb7b6ic\",\"orig_file_cid\":\"baeaaaiqsecplhdmzghc3rxgkugvtu3l5nrxainx4n27ag3jxxha45fuisbjcg\",\"orig_filename\":\"c706eb211dfc1129ec0184eb7c10befd.wav\",\"audio_upload_id\":\"0ffe02336552770380ac7feea0acd080\",\"duration\":169,\"cover_art_sizes\":\"baeaaaiqsea57hmmgwgrdehpzpjsftszcqhqgbcb2dcplpnezzu4deydmz2jqw\"}}",
    "nonce": "0xf5a934b8120c6819ef5df47c785471177725d5a1b81b59b6ca1f07279d207e85",
    "signature": "0xd99e1f01cd7b210c72775e1a8206f1beaabd5bf9bb3d7d1bc5516623151302aa1a875e02d6c7f3d810153d62b58c42424adc70efbe31355b5dbbfafb2a970a8f1b",
    "signer": "0x98F4295af45c93F3802F70FC0811654a74df1e73",
    "userId": "715160400"
  }
}