Input
| Property | Type | Required | Description | 
|---|---|---|---|
| channel | DROPDOWN | Yes | Channel, private group, or IM channel to send message to. | 
| text | LONG_TEXT | Yes | The text of your message | 
| username | SHORT_TEXT | No | The username of the bot | 
| profilePicture | SHORT_TEXT | No | The profile picture of the bot | 
