text: create table message_queue_candidates
  (
      id bigserial not null constraint message_queue_candidates_pkey primary key,
      message_type varchar(70) not null,
      time_stamp timestamp default now() not null,
      published timestamp,
      message_information jsonb not null
  );
  
  create index idx_message_queue_candidates_time_stamp on message_queue_candidates (time_stamp);
  