PositionOpened (uint256 positionId, address trader, address currency, address collateralCurrency, uint256 downPayment, uint256 principal, uint256 collateralAmount, uint256 feesToBePaid)
[topic 0]:0x41ae823bf4c91d7bece87d6eada54c198fd07594ad19d96d72d025896049bfdb
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