Push message content.
Optional
is_True, if the message is outgoing.
The message identifier. The message will not be available in the chat history, but the identifier can be used in viewMessages, or as a message to be replied in the same chat.
Identifier of the sender of the message. Corresponding user or chat may be inaccessible.
Name of the sender.
New message was received through a push notification. Subtype of NotificationType.