Ineligible countries are listed in the official rules. Here is that segment as seen in the rules
VOID WHERE PROHIBITED, TAXED OR RESTRICTED BY LAW OR INTERNATIONAL PUBLIC POLICY (WHICH INCLUDES IRAN, IRAQ, NORTH KOREA, SOMALIA, SUDAN, SYRIA, AND THE REGIONS OF CRIMEA, DONETSK, AND LUHANSK), WHERE REGISTRATION, FILING OR NOTICE REQUIREMENTS MAY EXIST (WHICH INCLUDES BRAZIL AND ITALY), OR WHERE WE CANNOT DISTRIBUTE PRIZES TO YOU BECAUSE OF LEGAL OR OTHER CONSIDERATIONS (WHICH INCLUDES RUSSIA AND TURKEY) (COLLECTIVELY, THE “RESTRICTED JURISDICTIONS”).
If your country of residence is not listed here, there aren’t any eligibility concerns.
I hope this helps! 