TickReqParams

Field	Type	Description
`reqId`	`int32`	Unique request identifier used for tracking across EWrapper
`minTick`	`string`	tick for the contract on the exchange
`bboExchange`	`string`	Identifier for the exchange with the best bid and offer
`snapshotPermissions`	`int32`	Market data permissions to retrieve instrument data.
`lastPricePrecision`	`string`	The decimal precision for supported prices.
`lastSizePrecision`	`string`	The decimal precision supported for order sizes.