[accounts] code refactoring on validation postpone command

2 jobs for 540_postpone_users_validation in 12 minutes and 56 seconds (queued for 5 seconds)
Status Job ID Name Coverage
  Build
passed #183758
docker-build
build_linux_36

00:12:56

64.0%
failed #183757
docker-build
build_linux_36

00:02:08