{
  "manageEntity": {
    "action": "Create",
    "entityId": "396576389",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":396576389,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Jazz\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Peaceful\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Spring Day\",\"duration\":178,\"audio_upload_id\":\"8c930cf2587a08094c1368bfaf6f3dc0\",\"track_cid\":\"baeaaaiqsedr2zsgwcnxz6fxclxjz2rxntyujtccbaflfrpyzezdi7n4xfe4d4\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseakzw57zmwwbfgfofcle2cqj3gjqiqixq5uzlhtlqjvatyoelzb4i\",\"orig_filename\":\"Spring Day.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":105,\"is_custom_bpm\":false,\"musical_key\":\"E major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":614648639,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebb6lietxmk5xxeig3yyumgcnyilnxcah4nibjex67u5w5ujs2m6o\"}}",
    "nonce": "0x65acc146d19b23bcd624eec71a5ee886b24b231250be111dcd95e892fa6eed59",
    "signature": "0x24e386934fcecd87fa450d4cf41c56b5d5a962ca172668e2358f019abaac639b4bb39cdc73f31457516c178848b523edb0d6365a06c539617b5310b54afb1c341c",
    "signer": "0xD7f4C5ADd1D9F3326620c0e81d391934ca65791b",
    "userId": "614648639"
  }
}