Changes to Subscribe BLVT (USER_DATA)

for the query request parameter recvWindow, the format changed from no format to int64

for the query request parameter timestamp, the format changed from no format to int64

removed the optional property timstamp from the response with the 200 status

for the query request parameter cost, the format was generalized from float to double

the response property amount became required for the status 200

the response property code became required for the status 400

the response property code became required for the status 401

the response property cost became required for the status 200

the response property id became required for the status 200

the response property msg became required for the status 400

the response property msg became required for the status 401

the response property status became required for the status 200

the response property tokenName became required for the status 200

added the required property timestamp to the response with the 200 status