Before I update github would you please try the following:
{
"notification_type": "{{NotificationType}}"
,"user_name": "{{NotificationUsername}}"
,"device_name": "{{DeviceName}}"
,"device_id": "{{DeviceId}}"
,"client_name": "{{ClientName}}"
,"server_name": "{{ServerName}}"
,"server_id": "{{ServerId}}"
,"server_version": "{{ServerVersion}}"
{{#if_equals ItemType "Movie"}}
,"item_id": "{{ItemId}}"
,"item_type": "{{ItemType}}"
,"item_name": "{{Name}}"
,"thumbnail_url": "{{ServerUrl}}/Items/{{ItemId}}/Images/Primary"
,"year": "{{Year}}"
,"overview": "{{Overview}}"
,"genres": "{{Genres}}"
{{/if_equals}}
{{#if_equals ItemType "Audio"}}
,"item_id": "{{ItemId}}"
,"item_type": "{{ItemType}}"
,"item_name": "{{Name}}"
,"thumbnail_url": "{{ServerUrl}}/Items/{{ItemId}}/Images/Primary"
,"album": "{{Album}}"
,"artist": "{{Artist}}"
,"genres": "{{Genres}}"
,"year": "{{Year}}"
{{/if_equals}}
{{#if_equals ItemType "MusicAlbum"}}
,"item_id": "{{ItemId}}"
,"item_type": "{{ItemType}}"
,"item_name": "{{Name}}"
,"thumbnail_url": "{{ServerUrl}}/Items/{{ItemId}}/Images/Primary"
,"album": "{{Album}}"
,"artist": "{{Artist}}"
,"genres": "{{Genres}}"
,"year": "{{Year}}"
,"runtime_ticks": "{{RunTimeTicks}}"
,"runtime": "{{RunTime}}"
{{/if_equals}}
{{#if_equals ItemType "Episode"}}
,"item_id": "{{ItemId}}"
,"item_type": "{{ItemType}}"
,"item_name": "{{Name}}"
,"thumbnail_url": "{{ServerUrl}}/Items/{{ItemId}}/Images/Primary"
,"series_name": "{{SeriesName}}"
,"season_number": "{{SeasonNumber}}"
,"season_number_00": "{{SeasonNumber00}}"
,"episode_number": "{{EpisodeNumber}}"
,"episode_number_00": "{{EpisodeNumber00}}"
,"episode_year": "{{Year}}"
,"overview": "{{Overview}}"
,"genres": "{{Genres}}"
,"series_id": "{{SeriesId}}"
,"series_url": "{{ServerUrl}}/web/index.html#!/details?id={{SeriesId}}&serverId={{ServerId}}"
{{/if_equals}}
{{#if_equals ItemType "Season"}}
,"item_id": "{{ItemId}}"
,"item_type": "{{ItemType}}"
,"item_name": "{{Name}}"
,"thumbnail_url": "{{ServerUrl}}/Items/{{ItemId}}/Images/Primary"
,"series_name": "{{SeriesName}}"
,"series_id": "{{SeriesId}}"
,"series_url": "{{ServerUrl}}/web/index.html#!/details?id={{SeriesId}}&serverId={{ServerId}}"
,"season_number": "{{SeasonNumber}}"
,"season_number_00": "{{SeasonNumber00}}"
,"overview": "{{Overview}}"
,"year": "{{Year}}"
{{/if_equals}}
{{#if_equals ItemType "Series"}}
,"item_id": "{{ItemId}}"
,"item_type": "{{ItemType}}"
,"item_name": "{{Name}}"
,"thumbnail_url": "{{ServerUrl}}/Items/{{ItemId}}/Images/Primary"
,"overview": "{{Overview}}"
,"year": "{{Year}}"
{{/if_equals}}
{{#if_equals NotificationType "ItemAdded"}}
,"item_url": "{{ServerUrl}}/web/index.html#!/details?id={{ItemId}}&serverId={{ServerId}}"
{{/if_equals}}
{{~#if_exist Provider_imdb~}}
,"imdb_id": "{{Provider_imdb}}"
{{~/if_exist~}}
{{~#if_exist Provider_tmdb~}}
,"tmdb_id": "{{Provider_tmdb}}"
{{~/if_exist~}}
{{~#if_exist Provider_tvdb~}}
,"tvdb_id": "{{Provider_tvdb}}"
{{~/if_exist~}}
{{~#if_exist Provider_wikidata~}}
,"wikidata_id": "{{Provider_wikidata}}"
{{~/if_exist~}}
{{~#if_exist Provider_musicbrainzartist~}}
,"musicbrainz_artist": "{{Provider_musicbrainzartist}}"
{{~/if_exist~}}
{{~#if_exist Provider_musicbrainzalbumartist~}}
,"musicbrainz_albumartist": "{{Provider_musicbrainzalbumartist}}"
{{~/if_exist~}}
{{~#if_exist Provider_musicbrainztrack~}}
,"musicbrainz_track": "{{Provider_musicbrainztrack}}"
{{~/if_exist~}}
{{~#if_exist Provider_musicbrainzalbum~}}
,"musicbrainz_album": "{{Provider_musicbrainzalbum}}"
{{~/if_exist~}}
{{~#if_exist Provider_kinopoiskru~}}
,"kinopoiskru_id": "{{Provider_kinopoiskru}}"
{{~/if_exist~}}
{{#if_equals NotificationType "PlaybackStart"}}
,"item_url": "{{ServerUrl}}/web/index.html#!/details?id={{ItemId}}&serverId={{ServerId}}"
,"event_type": "playback_start"
,"runtime_ticks": "{{RunTimeTicks}}"
,"play_method": "{{PlayMethod}}"
{{/if_equals}}
{{#if_equals NotificationType "PlaybackProgress"}}
,"item_url": "{{ServerUrl}}/web/index.html#!/details?id={{ItemId}}&serverId={{ServerId}}"
,"event_type": "playback_progress"
,"playback_position_ticks": "{{PlaybackPositionTicks}}"
,"runtime_ticks": "{{RunTimeTicks}}"
,"is_paused": "{{IsPaused}}"
,"play_method": "{{PlayMethod}}"
{{/if_equals}}
{{#if_equals NotificationType "PlaybackStop"}}
,"item_url": "{{ServerUrl}}/web/index.html#!/details?id={{ItemId}}&serverId={{ServerId}}"
,"event_type": "playback_stop"
,"played_to_completion": "{{PlayedToCompletion}}"
,"playback_position_ticks": "{{PlaybackPositionTicks}}"
,"runtime_ticks": "{{RunTimeTicks}}"
,"play_method": "{{PlayMethod}}"
{{/if_equals}}
{{#if_equals NotificationType "UserCreated"}}
,"event_type": "user_created"
,"user_id": "{{UserId}}"
,"is_admin": "{{IsAdmin}}"
{{/if_equals}}
{{#if_equals NotificationType "UserDeleted"}}
,"event_type": "user_deleted"
,"user_id": "{{UserId}}"
{{/if_equals}}
{{#if_equals NotificationType "UserLockedOut"}}
,"event_type": "user_locked_out"
,"user_id": "{{UserId}}"
,"is_locked_out": "{{IsLockedOut}}"
{{/if_equals}}
{{#if_equals NotificationType "UserPasswordChanged"}}
,"event_type": "user_password_changed"
,"user_id": "{{UserId}}"
{{/if_equals}}
{{#if_equals NotificationType "UserUpdated"}}
,"event_type": "user_updated"
,"user_id": "{{UserId}}"
,"is_admin": "{{IsAdmin}}"
,"is_locked_out": "{{IsLockedOut}}"
{{/if_equals}}
{{#if_equals NotificationType "AuthenticationSuccess"}}
,"event_type": "authentication_success"
,"user_id": "{{UserId}}"
,"last_login_date": "{{LastLoginDate}}"
,"last_activity_date": "{{LastActivityDate}}"
,"client": "{{Client}}"
,"remote_end_point": "{{RemoteEndPoint}}"
{{/if_equals}}
{{#if_equals NotificationType "AuthenticationFailure"}}
,"event_type": "authentication_failure"
,"username": "{{Username}}"
,"user_id": "{{UserId}}"
,"app": "{{App}}"
,"app_version": "{{AppVersion}}"
,"remote_end_point": "{{RemoteEndPoint}}"
{{/if_equals}}
}
you should see (if they are available):
payload.item_url
payload.imdb_id
payload.tmdb_id
payload.tvdb_id
payload.kinopoiskru_id
I have also added, just incase:
payload.series_url
payload.wikidata_id
payload.musicbrainz_artist
payload.musicbrainz_albumartist
payload.musicbrainz_track
payload.musicbrainz_album
please let me know how you get on, from my very quick testing they look to be ok but I do not use kinopoiskru (so hopefully the formatting is ok)