{
  "manageEntity": {
    "action": "Create",
    "entityId": "848609209",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":848609209,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"test01\",\"duration\":24,\"audio_upload_id\":\"01KV3YHAWVS2XVHK4P21TT7M4D\",\"track_cid\":\"baeaaaiqsediptrkbx5knzzghl2327nriutiigqbzzg4n5osjtyc62eol74jze\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseaucovx26uznfcjpha32yq2tkogwckorcrkwl65c4pmns5fs7d6ds\",\"orig_filename\":\"test01.flac\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":95,\"is_custom_bpm\":false,\"musical_key\":\"G flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":712229975,\"track_segments\":[],\"cover_art_sizes\":\"01KV3YGT5GJE92AJDDPBMP9BMQ\",\"audio_analysis_error_count\":0}}",
    "nonce": "0xec494dab8656fd190f4bb48364d06b7dfbbf2e4ae72ef9138798f8f548a3ca9c",
    "signature": "0x72fabe77c2b6d05b3140fb8a0f9a5e473625d60814cf25919e8d31cf79046e431aee35e5d768de687b05fa0bc1c4ecbcc40d205b01cbaf2f80ef01e6d28f4da61b",
    "signer": "0xb72e8a3DA14D2C1755c1F80FFdC075DB6260c697",
    "userId": "712229975"
  }
}