Save Cookie Values from Session - Especially User Tokens

I have difficulty in retrieving cookie value from the session, can you please tell me a way to achieve this. I want to extract a cookie value like – user_token_s = 63865927 (not full value)

Sample Session details :-

CookieJar(Map(CookieKey(user_token_s,,/) → StoredCookie(user_token_s=63865927|1473315169|nlrUTI4oO8nDckocWb2t9Q|SgRWzEDgdN7FP3jDgKBrULcZDb53J4xQKTRp6I97Zps;; path=/; secure; HTTPOnly,false,false,1472710371888)

Aprreciate Your Help !!!