{
"bkRatioList": [
{
"bkInst": "string",
"bkName": "string",
"contractRateList": [
{
"contract": "string",
"contractName": "string",
"longRate": 0,
"shortRate": 0
}
],
"ratioList": [
0
]
}
],
"dateList": [
{}
]
}