ReplyTo

Field	Type	Example	Possible Values
messageId	integer	123	Message IDs
clientMessageId	string	"66d93f9b-a8ff-4f18-a092-c19bdeb31fa4"	Any string
message?	string	"Hello"	Any string
sender	string	"User1"	User IDs
createdAt	timestamp	123456789	Timestamp