Returns active orders for a user on a specific market.
Note:
baseAsset and quoteAsset fields from upstream are intentionally omittedEthereum address of the user (case-insensitive)
"0x4869a4c7657cef5e5496c9ce56dde4cd593e4923"
Market contract address
"0x131a2e70a5b31a517a74b8c567149bc294470da9"
Number of active orders to return
x >= 11