消息与事件接收配置callback但是关注跟取关两个推送的都是signature=252f7394e55433501b7e45c6fe6bada2f8f58824&timestamp=1710298907&nonce=1056898115&openid=ohWUc67pGPOIyjPqXknO2VSs8qyQ&encrypt_type=aes&msg_signature=35973f59ede3d6e9b9e5ffc51ee81d5ca046b56b

signature=222531a04b5bfda68aae850a6307b8a0aa265219&timestamp=1710299283&nonce=567596665&openid=ohWUc67pGPOIyjPqXknO2VSs8qyQ&encrypt_type=aes&msg_signature=d067d743ac546171003c299ffd9a6fb6f8eb809e

这两要怎么去区分那个是关注那个是取关嘞