{
  "manageEntity": {
    "action": "Create",
    "entityId": "488987689",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":488987689,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Metal\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Fiery\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Not My Cross - Harder (modern metal)\",\"duration\":285,\"audio_upload_id\":\"49aafe9c3fc52536b630a3f54a03a53d\",\"track_cid\":\"baeaaaiqseaxzckpsysjgg4ulmfyrmrwu2qqhi77o5hn4qapbvlda4idehkx6c\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseazsepj2npzsc5ay2vqs2k4fp7sjwtbsaff7atkttcneac3eihteq\",\"orig_filename\":\"Step pre my 2.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":120,\"is_custom_bpm\":false,\"musical_key\":\"E minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":881747261,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseaftgcp4lplg27qucl7e4bx33lryvlcfd4b7cvl63qq35qbtgezos\"}}",
    "nonce": "0x4532ed20703318c71ec56a58bb265facb5506fa30f1b4971cef79465ff9897ea",
    "signature": "0xed1dc2ea7430ed19e0920bdc1be4f730dc4a17c5df9cc3c1ed2b32c4765268f53e9774f88acda93b152a8b7cbe6fd19650fceee0fddbf59f001d8d1976d0f2601b",
    "signer": "0x67B20691f36f58177293f5f8B2EcF2007155C67b",
    "userId": "881747261"
  }
}