{
  "manageEntity": {
    "action": "Create",
    "entityId": "278189637",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":278189637,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Rock\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Gritty\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Regenerator\",\"duration\":150,\"audio_upload_id\":\"607b8fa08b2c9d57a3f7f5bf64b4b35b\",\"track_cid\":\"baeaaaiqsecvhd2i7233lffyxgwhjoahuzwl3daop2gtgoojyx223czedvy3zg\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseccmztqeyytli2zl7abctkmclp3k6ertvrvmm7evgyb5ih4ibgdvg\",\"orig_filename\":\"Regenerator.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":80,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":343198928,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsec2bulb6y35av4klbgt3s5qwfceihuhry5ao346gxrrl3xpyuxhau\"}}",
    "nonce": "0xb45f3d5551637a1b614618a1ac70ebe02b04de24bbf85da14c726f6c5408f92a",
    "signature": "0x7e836958977adcff222b2b2faa4604fd8da1b7092d4274326fd640f5dddab08133fc5559607db40bc6b26d329f64d64791f494d91b40844e2ea10216083cef361c",
    "signer": "0x6f14c0B3a4c40A95BF7421F00865288cBe502808",
    "userId": "343198928"
  }
}