Gig: Playing for Keeps

Gig: Playing for Keeps is a gig in Cyberpunk 2077.

Walkthrough
You can recover the implant two ways here:
 * blackmail the bartender
 * take it by force

If you wish to blackmail the bartender, you'll need to sneak into the back room through the side alley and access the computer here. Read the file on the computer which reveals the group is using their own implants to cheat and win against those coming there to play. You can then head back around to the front of the building and go in to talk to the bartender to reveal this information and he'll give you Jacob's implant, albeit telling you that you and Jacob aren't welcome there anymore.

Journal Entry

 * Got a call from Jacob Lamb - friend of mine, director, from the good ol' days. Ex-director, I should say. Ever since Bushido X made a loss of a billion, the guy never set foot on a set again.
 * Jacob makes a living playing cards. One time he tried his luck at an illegal Tyger Claws casino at the back of the Kashuu Hanten eatery. Things weren't looking good, but instead of getting up from the table, he waited until he'd recoup. First went all his money, then his watch, wedding ring... And finally, one of his optics.
 * Jacob wants his implant back. Sending you the coordinates of the casino where he lost it. AFAIK, the eye's still there. How you get it is your biz, not mine.