Possible enumeration values:

NameValueDescription
Regular

1

APICreated

2

Chat_Created

3

Chat_MemberIncluded

4

Chat_MemberExpelled

5

Chat_MemberLeft

6

Chat_MemberEntered

7

Chat_Regular

8

Chat_NameChanged

9

Chat_AvatarChanged

10

MessagePinned

11

MessageUnpinned

12