Message

Property	Type	Description	Filter Group and Version	Available Version
`body`	Feed Item Body	Text of this message	Small, 29.0	23.0
`conversationId`	String	18-character ID of the conversation this message is part of	Big, 29.0	23.0
`conversationUrl`	String	URL to the conversation this message is part of	Small, 29.0	23.0
`id`	String	18-character ID of the message	Small, 29.0	23.0
`recipients`	User Summary[]	Collection of one or more message recipients The collection of recipients is empty for the following resources because the conversation participants are already identified in the conversation’s `members` property in Conversation Detail and Conversation Summary. `1/chatter/users/me/conversations` `1/chatter/users/me/conversations/conversationId` Note	Small, 29.0	23.0
`sentDate`	String	ISO8601 date string, for example, 2011-02-25T18:24:31.000Z	Small, 29.0	23.0
`sender`	User Summary	Information about the user who sent this message	Small, 29.0	23.0
`sendingCommunity`	Reference	Information about the community from which the message was sent Returns `null` for the default community or if communities aren’t enabled.	Medium, 32.0	32.0
`url`	String	URL to this message	Small, 29.0	23.0

Chatter REST API Developer's Guide