{
  "manageEntity": {
    "action": "Create",
    "entityId": "245280961",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":245280961,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Rock\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Cool\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Butterfly (R)\",\"duration\":319,\"audio_upload_id\":\"4130f45fc2f6206b334538ac304a2dd4\",\"track_cid\":\"baeaaaiqsebeknqhlk735w35vrh5pbe7m6tw4npnmgtqfnbmzwpqfi3xbhfbuy\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecwgrls54owkscegbgu3vubkpachgaztzn5r4xci55yewxnqmczve\",\"orig_filename\":\"Butterfly (R).mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":116,\"is_custom_bpm\":false,\"musical_key\":\"E major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":590052416,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsea6a6rxknn56m3yfxs3itkbgjurdrrqj3fl5sannr3kis4ang7ajm\"}}",
    "nonce": "0x47837884e3b09737ea9e005e54c20bb5ab5dd9895183fdc784676fd6aed838ca",
    "signature": "0x890b18b67de3d85ed6d55db4d4d9acdf0df0209eb6e5b73947c128322e45197a333f7c83fe3d68a4995e303647a6e703f8fd61c2f1aff3caa964f705c19e8cb21b",
    "signer": "0x68993aB65DA349970c812E833CC387667F61b7a5",
    "userId": "590052416"
  }
}