* <ay> : Byte Array
* <aay> : Array of Byte Arrays
* <as> : String Array
+* <ax> : Array of signed 64 bit integer
* <b> : Boolean (0|1)
* <x> : Signed 64 bit integer
* <> : no return value
Exceptions: AttachmentInvalid, Failure, InvalidNumber, UntrustedIdentity
+sendTyping(recipient<s>, stop<b>) -> <>::
+* recipient : Phone number of a single recipient
+* targetSentTimestamp : True, if typing state should be stopped
+
+Exceptions: Failure, GroupNotFound, UntrustedIdentity
+
+
+sendReadReceipt(recipient<s>, targetSentTimestamp<ax>) -> <>::
+* recipient : Phone number of a single recipient
+* targetSentTimestamp : Array of Longs to identify the corresponding signal messages
+
+Exceptions: Failure, UntrustedIdentity
+
sendGroupMessageReaction(emoji<s>, remove<b>, targetAuthor<s>, targetSentTimestamp<x>, groupId<ay>) -> timestamp<x>::
* emoji : Unicode grapheme cluster of the emoji
* remove : Boolean, whether a previously sent reaction (emoji) should be removed