Is it legal in the UAE to run a website with entry fees for players and a cash prize?

Hello,

Is it possible and legal in the UAE to run a website with entry fees for players and a cash prize for the winners? Or Would this be considered as some sort of gambling?

This is the function of our site. When the users enter the website, they will see a list of tournaments with different entry fees from which they select a prize group and compete in the respective match or matches.

The final prize for each prize group is mentioned in the beginning. And before the users enter any match, they are fully aware of the entry fee and the final prize.

The final prize goes to the winning team or individual. The winning team or individual is a person/team that has taken out other participants consisting of other teams/individuals that participated in the same tournament.