TickPrice

Field	Type	Description
`reqId`	`int32`	Unique request identifier used for tracking across EWrapper
`tickType`	`int32`	Type of data the tick represents.
`price`	`double`	The order’s price
`size`	`string`	Represents volume of the order data.
`attrMask`	`int32`	Defines TickAttrib.canAutoExecute.