Changes volume level of a participant of an active group call. If the current user can manage the group call or is the
owner of the group call, then the participant's volume level will be changed for all users with the default volume
level.
Request type for Tdjson#setGroupCallParticipantVolumeLevel.
Changes volume level of a participant of an active group call. If the current user can manage the group call or is the owner of the group call, then the participant's volume level will be changed for all users with the default volume level. Request type for Tdjson#setGroupCallParticipantVolumeLevel.