{
  "manageEntity": {
    "action": "Create",
    "entityId": "1032346619",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1032346619,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"rock\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"ガラスのブルース\",\"duration\":350,\"audio_upload_id\":\"354a7393eafb8dc404720fb070d5a45b\",\"track_cid\":\"baeaaaiqsebxqicoe6omtbj4zgmhguxpnrveh4e4kqk2wcnila7gvnjdlp4xvk\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedlikrnvp3ajs3nhhi4b5wvlmrqc7xzib334daazeuj3juvgwrnje\",\"orig_filename\":\"ガラスのブルース.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":121,\"is_custom_bpm\":false,\"musical_key\":\"F minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":366246970,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebpm3xy53e32f7gj7fhtaidohdq5tkkvh36dy3acayfjofshzme7q\"}}",
    "nonce": "0xca2060a25d30e4c25160a08e82309bd9fb5abcbf69d78ac989bb9bd994797243",
    "signature": "0x6ddd023235319e223961ebb24cb15a62dc4d8fc9e16c7f89e7abfc0ad5e454af3180d0b4a6b029ef13eb2460212a23f1ad7c523c06bd3c83bc4c4a26d7de9f141b",
    "signer": "0x1Dd8e503eA52eE0cE5360d0F01B587662d27d935",
    "userId": "366246970"
  }
}