{
  "manageEntity": {
    "action": "Create",
    "entityId": "689024221",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":689024221,\"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,\"mood\":\"Peaceful\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Chapitre 27 (1)\",\"duration\":215,\"audio_upload_id\":\"01KN0453K2D86S62SQ87RHRB0Z\",\"track_cid\":\"baeaaaiqseaa2thtxw3pjiwf753v3ejurqefqhv3rdeguc4bsj2bwbchp3rplo\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedr2wgzieiydpnymp2matubxdhid7tar4ev5wmd2oovugfeearw2u\",\"orig_filename\":\"Chapitre 27 (1).mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":123,\"is_custom_bpm\":false,\"musical_key\":\"B flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":362882,\"track_segments\":[],\"cover_art_sizes\":\"01KN042ZQFEQREPEP8DQAPDVEW\",\"audio_analysis_error_count\":0}}",
    "nonce": "0x3ce3a72cac5538d09745c176fd0fe9d2eb03ba3b6a09aadac059cef53ea97406",
    "signature": "0x606077eb4e6740981d7610e3a428e5a30f4d814fa4b4640e91a7908edd7b609b7f758589ff2f62345f4a9f9a29a0dd8367092489dd24f9ff84c0839e035a162c1c",
    "signer": "0x4DB45Bb30b8154322fB68a1FD41Adc37Acf6F57A",
    "userId": "362882"
  }
}