Signed token base units: positive supplies/borrows, negative withdraws/repays.
Optional
Required when the account has no such position yet: decimals, usdPrice and the collateralFactorBps / liquidationThresholdBps a new position would snapshot.
usdPrice
collateralFactorBps
liquidationThresholdBps
Signed token base units: positive supplies/borrows, negative withdraws/repays.