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{"headers":{"Players":["player_id","group_id"],"Matches":["match_id","first_player","second_player","first_score","second_score"]},"rows":{"Players":[[10,2],[15,1],[20,3],[25,1],[30,1],[35,2],[40,3],[45,1],[50,2]],"Matches":[[1,15,45,3,0],[2,30,25,1,2],[3,30,15,2,0],[4,40,20,5,2],[5,35,50,1,1]]}}