Futures Variance Symbol Mapping Message Example

{
 "m" : "VS",
 "to" : 478000000,
 "ut" : 1634534200,
 "sy" : "TESTV",
 "ps" : "VA 240621",
 "AV" : 513.523553640453,
 "N" : "505",
 "n" : 490
}