Workflow: Facebook Mattermost Update

{
    "id": "131",
    "name": "Receive a Mattermost message when a user updates their profile on Facebook",
    "nodes": [
        {
            "name": "Facebook Trigger",
            "type": "n8n-nodes-base.facebookTrigger",
            "position": [
                590,
                260
            ],
            "webhookId": "14ba2eea-04a1-4659-b83e-0090ba480452",
            "parameters": {
                "appId": "",
                "options": {
                    "includeValues": true
                }
            },
            "credentials": {
                "facebookGraphAppApi": "facebook"
            },
            "typeVersion": 1
        },
        {
            "name": "Mattermost",
            "type": "n8n-nodes-base.mattermost",
            "position": [
                790,
                260
            ],
            "parameters": {
                "message": "=The user with uid {{$node[\"Facebook Trigger\"].json[\"uid\"]}} changed their {{$node[\"Facebook Trigger\"].json[\"changes\"][0][\"field\"]}} to {{$node[\"Facebook Trigger\"].json[\"changes\"][0][\"value\"][\"page\"]}}.",
                "channelId": "13fx8838gtbj3d41a6a7c1w7fe",
                "attachments": [],
                "otherOptions": []
            },
            "credentials": {
                "mattermostApi": "mattermost"
            },
            "typeVersion": 1
        }
    ],
    "active": false,
    "settings": [],
    "connections": {
        "Facebook Trigger": {
            "main": [
                [
                    {
                        "node": "Mattermost",
                        "type": "main",
                        "index": 0
                    }
                ]
            ]
        }
    }
}