{
  "manageEntity": {
    "action": "Update",
    "entityId": "742755532",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":742755532,\"owner_id\":115938787,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Electronic\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Romantic\",\"is_stream_gated\":true,\"stream_conditions\":{\"usdc_purchase\":{\"price\":200,\"splits\":[{\"user_id\":115938787,\"percentage\":100}]}},\"allowed_api_keys\":null,\"is_download_gated\":true,\"download_conditions\":{\"usdc_purchase\":{\"price\":200,\"splits\":[{\"user_id\":115938787,\"percentage\":100}]}},\"release_date\":\"2025-08-30T21:00:00.000Z\",\"tags\":\"hatsunemiku,vocaloid,mikuntv2,mikusp,mikuv4chinese,mikuenglish,mikuv4x,mikuv3,mikunt,electronic\",\"title\":\"Miku's Feelings (Virtual Existence) Part IV - Miku English\",\"duration\":86,\"preview_start_seconds\":0,\"audio_upload_id\":\"88b5adc3594b91568906ab870fd85457\",\"track_cid\":\"baeaaaiqseav5dsjkcgzicq2ageslddfmlcyx27rrspj2mym5ggicquyyffdwq\",\"preview_cid\":\"baeaaaiqsedweashluqfgaod4u3qdftelemsqsfl2slukgt73bfsaqhvxvjmx2\",\"orig_file_cid\":\"baeaaaiqseb7fksehwf24o74xiw23lnqhei5ezfvchg4txojbpimzamsjx5uc2\",\"orig_filename\":\"Hatsune Miku (Miku V4 English and Miku V3 English) - Miku's Feelings (Virtual Existence) Part IV.wav\",\"cover_art_sizes\":\"baeaaaiqsedtaxlajnfgjltajlir3deqrmxiztxsgv7vklq7mgn4jw7uv3bljy\",\"is_downloadable\":true,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":122,\"is_custom_bpm\":false,\"musical_key\":\"D flat\",\"is_custom_musical_key\":true,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0x081296492a2cd45ed2757aa3bf6e8c45bfb9d7e23501a9c04086e82b2379d58d",
    "signature": "0x48bd1df1deb11d724ed65ddc6c8b6a4852bf428e998f5eb962abc7b8029b0ed1258b1305f07d973ea45972d2c6c94229500e9832af244401942cb7709775034c1c",
    "signer": "0x4831aa86589562eD9bd0FfdFB8e4e6802CA9fA97",
    "userId": "115938787"
  }
}