{
  "manageEntity": {
    "action": "Create",
    "entityId": "1291501304",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1291501304,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Experimental\",\"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\":\"Last Call March (1)\",\"duration\":197,\"audio_upload_id\":\"6c47ee3c893b45277767eceadfede043\",\"track_cid\":\"baeaaaiqseamzaup3wqsbafs7tog2uvhki5y245wwgaww6fhemejvy5oitwgzs\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsece7erfl6ghbqiloz3imkfn7orvxkrcy4xbprak4bosywu2rjf7i2\",\"orig_filename\":\"Last Call March (1).mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":145,\"is_custom_bpm\":false,\"musical_key\":\"G minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":974702,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseayt2v6iwxlm27b3kg2ljq4xmuhx46ork3qhu4pardserayb5vo3a\"}}",
    "nonce": "0x93baf9255e1946c0ba18d6e13b5a23de048c70cf1bd2603ddcda39d4c4c0b938",
    "signature": "0x4a3290fc48d571bb3d6e189197da599b95770b46c76e384cb90ac0318962e47d0121a2a40cf36fa101cbc6cd8fcda0406f67721e145d8e35d515a2785af424981b",
    "signer": "0xE1c9AFB78A96B47327FC435D8c3D4834BC6A9141",
    "userId": "974702"
  }
}