{
  "manageEntity": {
    "action": "Create",
    "entityId": "1234964150",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1234964150,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2026-03-31T20:51:38.000Z\",\"title\":\"Gramatik - Hold On\",\"duration\":275,\"audio_upload_id\":\"340cf10c6c1edf96b1eebcac263589c2\",\"track_cid\":\"baeaaaiqsed7r27h6xmdpprp7fnbmsr5sscnhhtbcyv3nubc2fcxf2ldwtagvi\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseck6mueiwtvie422z2rh4dvnufypam4igntcxuodsprjle76rr35y\",\"orig_filename\":\"17 Gramatik - Hold On.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":98,\"is_custom_bpm\":false,\"musical_key\":\"A minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":41804,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebvhmcvdvb2gobeowy6j6gphiawk3kjdsnyqcfissiffntg3pus2s\"}}",
    "nonce": "0x03d6d5119c7c15f0e9294df59f82a96a0c9440d657568cacd07cdf047f1a124f",
    "signature": "0x38e2b865e089c1dc3383144582c25d5396346507832d7ff94889fa0debc41e4d41d22651c98e3624de076e8b4a68697838a9d497099a573da63f6f10858b1b7e1c",
    "signer": "0x51C747e7437C025eb47a63843f019C0ff2253474",
    "userId": "41804"
  }
}