The PostgreSQL trigger script is recording all events with their changed values.

postgre_change_logs.sql

-- Define audit_logs table
CREATE TABLE IF NOT EXISTS public.audit_logs
(
    uuid uuid NOT NULL,
    operation character varying(10) COLLATE pg_catalog."default" NOT NULL,
    userid text COLLATE pg_catalog."default" NOT NULL,
    tablename text COLLATE pg_catalog."default" NOT NULL,
    changed json NOT NULL,
    stamp timestamp without time zone NOT NULL
);

-- Define jsonb_diff_val() function
CREATE OR REPLACE FUNCTION jsonb_diff_val(val1 JSONB, val2 JSONB)
    RETURNS JSONB AS
$$
DECLARE
    result JSONB;
    v      RECORD;
BEGIN
    result = val1;
    FOR v IN SELECT * FROM jsonb_each(val2)
        LOOP
            IF result @> jsonb_build_object(v.key, v.value)
            THEN
                result = result - v.key;
            ELSIF result ? v.key THEN
                CONTINUE;
            ELSE
                result = result || jsonb_build_object(v.key, 'null');
            END IF;
        END LOOP;
    RETURN result;
END;
$$ LANGUAGE plpgsql;

-- Define logging logging() function
CREATE OR REPLACE FUNCTION logging() RETURNS TRIGGER AS
$log_recorder$
BEGIN
    IF (TG_OP = 'DELETE') THEN
        INSERT INTO audit_logs SELECT OLD.uuid, TG_OP, user, tg_table_name, row_to_json(OLD.*), now();
        RETURN OLD;
    ELSIF (TG_OP = 'UPDATE') THEN
        INSERT INTO audit_logs
        SELECT NEW.uuid,
		TG_OP,
                user,
                tg_table_name,
                jsonb_diff_val(row_to_json(NEW.*)::jsonb, row_to_json(OLD.*)::jsonb)::json,
                now();
        RETURN NEW;
    ELSIF (TG_OP = 'INSERT') THEN
        INSERT INTO audit_logs SELECT NEW.uuid, TG_OP, user, tg_table_name, row_to_json(NEW.*), now();
        RETURN NEW;
    END IF;
    RETURN NULL;
END;
$log_recorder$ LANGUAGE plpgsql;

-- Register logging() trigger function on tables except audit_logs
do
$$
    declare
        f record;
    begin
        for f in select table_name
                from information_schema.tables
                WHERE table_type = 'BASE TABLE'
                    and table_schema = 'public'
                    and table_name not in ('audit_logs')
            loop
 		Execute 'DROP TRIGGER IF EXISTS change_events_' || f.table_name || ' ON ' || f.table_name;
                Execute  'CREATE OR REPLACE TRIGGER change_events_' || f.table_name || ' AFTER INSERT or UPDATE or DELETE ON ' || f.table_name || ' FOR EACH ROW EXECUTE PROCEDURE logging()';
            end loop;
    end;
$$;