fix #418: use struct.asMap() for data field (#638)
fix #418: use struct.asMap() for data field (#638)

Co-authored-by: Bo-Yi Wu <f80eec1bf98b3feebacc247f35f2b506218004cb@gmail.com>
appleboy/gorush,appleboy/gorush,appleboy/gorush,appleboy/gorush