What do you think about cryptocurrencies market in UAE? There are many OFWs there and this country is globally considered as very rich one.
Based on news articles from the UAE: They base their cryptocurrency industry through this rule: tolerated practice, they mean one that is legally prohibited according to the UAE Central Bank's regulations, but one where regulators take no measures against those who practice it (i.e. those who buy or sell bitcoin and other virtual currencies).
You can read this to know more about OFW in UAE:
https://en.wikipedia.org/wiki/Filipinos_in_the_United_Arab_Emirates