No it is not a "common type endorsement" (B777/787) in Singapore (CAAS) as a few other countries have.
Scoot have you on either on 777 or 787 for ease of bonding you exorbitant amounts (~SG$87,000). No more crew on 777 as all were forced onto 787, now that it's an all 787 fleet (still a couple of 777s hanging around the area). Those who delayed resigning an ADDITIONAL bond went to NokScoot/Bangkok which had big labour law problems (no surprise their!) and is now crew by Thia's.
Happy Landings