how to use regexp on auth_urls?

[rnnhood]

supose i have and auth_urls on /first123/seccond225/usethisroute

but the numbers 123 and 225 are unknown to me, can i use something like

auth_urls:
  - '/first([0/9]*)/seccond([0/9]*)/usethisroute, regexp'

? or there is another way to use the regexp here?

[kileyturney]

auth_urls: - '/first.*/seccond.*/usethisroute'