8,000 MAPS airdrop _$1,000 USD_ for top50 deposit users

The top 50 users by MAPS net deposit volume can be awarded with a reward as follows:
1st Place: 1,440 MAPS
2nd Place:1,200 MAPS
3rd Place: 960 MAPS
4th - 50th Place: share the 4,400 MAPS（about $550_ proportional to their trading volume