It appears to be a real thing, based on what I’ve discovered. You’ll have to take tests to see if you’re qualified for the job. The pay isn’t particularly good. It appears to be a feasible job provided you are willing to work when work is available.
I’d have a look at Fiverr. They have a variety of job styles. When you have enough positive reviews, you can also demand extra money. If you do an excellent job, you may also receive repeat business.