{
  "manageEntity": {
    "action": "Create",
    "entityId": "1204068258",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1204068258,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Metal\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Empowering\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Mandala Effect\",\"duration\":183,\"audio_upload_id\":\"53d53a423e832028093c8abb36c2b486\",\"track_cid\":\"baeaaaiqsec24zvvnhf6abfe3za4umhj47phelhmft5occgyezmki3kpbmpze6\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebth553xsd23sjfs3yjxlyjfyej7fienmf56rmjbr73re3azxcst6\",\"orig_filename\":\"Mandala Effect.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":100,\"is_custom_bpm\":false,\"musical_key\":\"C major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":256479919,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsearcr7pxphpipkms5dgs24yooryb6pz2jqg7e4nnvp733iddvhzjc\"}}",
    "nonce": "0x8d7b609eed56a100d546666ce07e30c863e8d1a66deb97ee48d206a0534e7a58",
    "signature": "0xa1b85f2883aa0e3a5586f35e07fbf6ba328114618442c1ac52abc7d9b657610e48d6174ff6df2f0cee2ead0d413ef8e2e22038db68e10abdffe54284a47759b61b",
    "signer": "0xc4A500E17D812B285447720CCcb7F8eB148c91bd",
    "userId": "256479919"
  }
}