{
  "manageEntity": {
    "action": "Create",
    "entityId": "557303947",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":557303947,\"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\":\"Catfish x Throw Some D's (Philia Mashup)\",\"duration\":132,\"audio_upload_id\":\"6643c09170df98f882138d16920419d5\",\"track_cid\":\"baeaaaiqseb6arlife7vge2nsx7lje5xtz3ylmkr7l254cevlh6nvrqimlnm24\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebyrttmo4gi3f4wwidkbk46bo2zc7wvbekpq6kk6fqirb5vuoyvgg\",\"orig_filename\":\"Catfish x Throw Some D's (Philia Mashup).wav\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":112,\"is_custom_bpm\":false,\"musical_key\":\"E flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":804508659,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseayrzucmb3iss5zux6n3ou6q4l37duyuibd452qz2og6r4mf4je2a\"}}",
    "nonce": "0x71cc1239f2a4d33514a50f83faa0e1b05b8a66bff948b5db700ff368f783a75e",
    "signature": "0x4a9a8880a5dc117a08e60b5e98e66daebeb5374c0ae40168a8779fcf5022da0526b63d10743ad4c50df0faf295cc7f6daccf45602672b0fe6dd4f07c1064bae01c",
    "signer": "0x5134b3CfBCc7d1C25c90b46d57D5895b6c2a9aAA",
    "userId": "804508659"
  }
}