Oba Ewuare II N'Ogidigan is a member of the Freemasons?

According to the social media user who shared the photo, the Oba of Benin, Oba Ewuare II is allegedly a Mason who publicly identifies with the 'oldest fraternity in the world', the Freemasons.
The 63 year old monarch is pictured below dressed in the supposed full regalia of the Masons.

I am not sure when this photo was taken but it is definitely before his coronation last month.