Send chatMessage in a channel or a chat - Microsoft Graph v1.0 | Microsoft Learn

HTTP/1.1 201 Created
Content-type: application/json

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$metadata#teams('fbe2bf47-16c8-47cf-b4a5-4b9b187c508b')/channels('19%3A4a95f7d8db4c4e7fae857bcebe0623e6%40thread.tacv2')/messages/$entity",
    "id": "1616991899452",
    "replyToId": null,
    "etag": "1616991899452",
    "messageType": "message",
    "createdDateTime": "2021-03-29T04:24:59.452Z",
    "lastModifiedDateTime": "2021-03-29T04:24:59.452Z",
    "lastEditedDateTime": null,
    "deletedDateTime": null,
    "subject": null,
    "summary": null,
    "chatId": null,
    "importance": "normal",
    "locale": "en-us",
    "webUrl": "https://teams.microsoft.com/l/message/19%3A4a95f7d8db4c4e7fae857bcebe0623e6%40thread.tacv2/1616991899452?groupId=fbe2bf47-16c8-47cf-b4a5-4b9b187c508b&tenantId=2432b57b-0abd-43db-aa7b-16eadd115d34&createdTime=1616991899452&parentMessageId=1616991899452",
    "policyViolation": null,
    "eventDetail": null,
    "from": {
        "application": null,
        "device": null,
        "user": {
            "@odata.type": "#microsoft.graph.teamworkUserIdentity",
            "id": "8ea0e38b-efb3-4757-924a-5f94061cf8c2",
            "displayName": "Robin Kline",
            "userIdentityType": "aadUser",
            "tenantId": "e61ef81e-8bd8-476a-92e8-4a62f8426fca"
        }
    },
    "body": {
        "contentType": "html",
        "content": "Here's the latest budget. <attachment id=\"153fa47d-18c9-4179-be08-9879815a9f90\"></attachment>"
    },
    "channelIdentity": {
        "teamId": "fbe2bf47-16c8-47cf-b4a5-4b9b187c508b",
        "channelId": "19:4a95f7d8db4c4e7fae857bcebe0623e6@thread.tacv2"
    },
    "attachments": [
        {
            "id": "153fa47d-18c9-4179-be08-9879815a9f90",
            "contentType": "reference",
            "contentUrl": "https://m365x987948.sharepoint.com/sites/test/Shared%20Documents/General/test%20doc.docx",
            "content": null,
            "name": "Budget.docx",
            "thumbnailUrl": null
        }
    ],
    "mentions": [],
    "reactions": [],
    "messageHistory": []
}