The Rock is a third-generation superstar, and comes from a giant wrestling family. His grandfather Peter Maivia and father Rocky Johnson all played key roles in the National Wrestling Alliance. Many of Rock's cousins and other distant relatives are active WWE superstars including Nia Jax and Roman Reigns.
So it's logical to believe that the family tree will only continue to grow. At least, The Rock's 16-year-old daughter is hoping it does. Simone Garcia Johnson did an interview with The Hollywood Reporter and admitted she would love to become a wrestler in the future:
"It’s a sport that is unlike anything else in the world. There’s just a certain amount of passion that every move and match requires, and that’s so admirable. It’s definitely something I’ve thought about and want to pursue."
Johnson - the daughter of Rock and his first wife, Dany Garcia - was recently named as a Golden Globe Ambassador in 2018 which will mark the 75th anniversary of the prestigious movie awards. She definitely has the family ties to be a competitor in the WWE some day, and there's no reason to believe she wouldn't be able to sustain the family success in the ring.
Rock has helped mentor many of his cousins in the ring. This obviously includes the aforementioned Reigns and Jax. The People's Champion was also related to the late Yokozuna, Umaga and Rosey, and is cousins with Rikishi.
At just 16 years of age, it could be quite a while until we see Rock's daughter in the squared circle - if she does decide to take the career path. Wrestlers like Alexa Bliss, Sasha Banks, Bayley and Charlotte didn't break through until their mid-to-late 20s. It'd be awesome for a WWE legend's daughter to grace the ring, but this may have to wait a good 10-15 years.