{
  "manageEntity": {
    "action": "Create",
    "entityId": "1077435030",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"access_authorities\":null,\"data\":{\"track_id\":1077435030,\"title\":\"add8ac9ed1df1a65d5df7d8333f7006a\",\"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\":\"baeaaaiqsedxibkx4dsbgzipycnvfgrmuakvirqakjgunjmhn5ofyhnj4iq37g\",\"orig_file_cid\":\"baeaaaiqsebb4zv7ojbfloyy4ce3ygc4ps4kj2ckpclsi2zsfxtytyi5bhxbgw\",\"orig_filename\":\"12c808cc624927c28dcc467649cc9819.wav\",\"audio_upload_id\":\"20a79faacfcea90cd19a59a36f4b08c2\",\"duration\":198,\"cover_art_sizes\":\"baeaaaiqsec5ut3426jexmbymm67ojt7dorunbkq2lk4boutghjflokf2io2vu\"}}",
    "nonce": "0xddbfb9212f9f6243493efa6345c2c0dcf02912a5289708b211755e8bb48321c2",
    "signature": "0xfe556cda486e0f9495b5fa9229e97400af8b15cc5e3cdb7b480f5383b6b6827243beb1d8f8fdd19d224f0bfad8ca492b3193ec125bcfa2a31b1985c6cf7f792a1c",
    "signer": "0x98F4295af45c93F3802F70FC0811654a74df1e73",
    "userId": "715160400"
  }
}