{
id: Id; // required
initial_time: int;
current_start_time: int | null;
spoken_time: int;
}
If initial_time
is changed, remaining_time
will be set to the same value
spoken_time
and current_start_time
can only be given if the action is executed internally.
spoken_time
is substracted from structure_level_list_of_speakers/remaining_time
.