First example user goes long then short.
market: 0x2626DA305c91d0535216a59d793f3330f829074F
first trade
long 5 at 0.4, cost 2
{"_direction":"0","_market":"0x2626DA305c91d0535216a59d793f3330f829074F","_outcome":"1","_amount":"50000000000000000","_price":"40","_betterOrderId":"0x0000000000000000000000000000000000000000000000000000000000000000","_worseOrderId":"0x0000000000000000000000000000000000000000000000000000000000000000","_tradeGroupId":"0x656236663431332d633535612d343963642d386364652d333065623838363200","_loopLimit":"2","_affiliateAddress":"0x0000000000000000000000000000000000000000","_kycToken":"0x0000000000000000000000000000000000000000"}