signature campaign provides a good passive income, but at the moment I'm not following any of the signature campaign. Well, it made my income be reduced, but I'll keep trying to get a passive income. sometimes I also play trading to get it, even though sometimes the results are not what I expected
income is not "passive" if you are working for it and spending lots of time. and since signature campaigns needs you to spend time and post it can not be passive income unless you are cheating and doing copy paste kind of thing in which case you will get caught and your passive income will be closed down

There isnt really any such thing a true passive income known, its more a spectrum. Take it from my experience and try to stay away from incomes that are labour intensive even if the pay is good, the problem is you just burn out quick. Work smarter not harder.