{
  "manageEntity": {
    "action": "Create",
    "entityId": "759480150",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":759480150,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"CM_295_步步生白蓮 Blooming White Lotus at Every Step 歩歩生白蓮 ほほしょうびゃくれん [中文]\",\"duration\":302,\"audio_upload_id\":\"92732ed5868cbec0018e203544a58e9c\",\"track_cid\":\"baeaaaiqsedyln3o7vjts54k2rnoyekusiitbt7krvhdlqcnpejz2255xqjkwo\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedcjtdc3fanz7jtkh4okni7274skhi3maihxqedgyof5fzxdae7im\",\"orig_filename\":\"CM_295_步步生白蓮 Blooming White Lotus at Every Step 歩歩生白蓮 ほほしょうびゃくれん [中文].wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":123,\"is_custom_bpm\":false,\"musical_key\":\"E minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":610888861,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseao3m26lnsw35eheswnjisxff5uvqirk2wsd6dfrf7lzsgnfb7sz6\"}}",
    "nonce": "0x118efdbd7112d2a90601d214c3e7b49689c94e2e0879e95ca4de3239e4fcfee8",
    "signature": "0x1c5ca353dd5ff006af4790cf3a2ae09c632d66d44d41458d74fff46e0f7525ed588f6fb1b60b73e23d8ccf6748223d939af671795381f71adc91516ecb4e25b21b",
    "signer": "0xf5BfE006B204417a4a7D6B64C2336EEE309eCc17",
    "userId": "610888861"
  }
}