{
  "manageEntity": {
    "action": "Create",
    "entityId": "1340985342",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1340985342,\"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,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"CM_291_有高山有大海 There Are Mountains and Oceans [English]\",\"duration\":260,\"audio_upload_id\":\"63f1496d9255d5640c50c04d3968e2de\",\"track_cid\":\"baeaaaiqsect3xazgsrm4e2qxozlfuv3jto4pkzrxuibemz4j5v2ghne3fcc5s\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecbytxvupkowmxzkqnlbjqv3v5inw3ghctabavf2qj7pdccwnwrrs\",\"orig_filename\":\"CM_291_有高山有大海 There Are Mountains and Oceans [English].wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":136,\"is_custom_bpm\":false,\"musical_key\":\"D flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":610888861,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseabgl2ntopcwxi2yaibgb5cvpzjtqm2uhkwj6ki5guci2f6enuom4\"}}",
    "nonce": "0x13b3b83e60caeb9ff9fbf916f28181ca92b1a98a40020b5cae251bb5e0e82c00",
    "signature": "0xc58ccb72d39aaf6be695eb1f5485a70f6eac4a4e2dceabd4b8900615ce661575056f953a55ff37438dbd02262f1e2867fd97e46e8956e0f0493aadbad30434101b",
    "signer": "0xf5BfE006B204417a4a7D6B64C2336EEE309eCc17",
    "userId": "610888861"
  }
}