0857 Mattermost Webhook Automate Webhook

{
  "name": "0857 Mattermost Webhook Automate Webhook",
  "nodes": [
    {
      "name": "Mattermost",
      "type": "n8n-nodes-base.mattermost",
      "position": [
        1050,
        200
      ],
      "parameters": {
        "message": "💪 This issue got closed in PagerDuty and Jira.",
        "channelId": "={{$node[\"Webhook\"].json[\"body\"][\"channel_id\"]}}",
        "attachments": [],
        "otherOptions": {}
      },
      "credentials": {
        "mattermostApi": "Mattermost Credentials"
      },
      "typeVersion": 1
    },
    {
      "name": "Mattermost1",
      "type": "n8n-nodes-base.mattermost",
      "position": [
        1050,
        400
      ],
      "parameters": {
        "message": "=🎉 The incident ({{$node[\"PagerDuty\"].json[\"summary\"]}}) was resolved by the lovely folks in the on-call team!",
        "channelId": "k1h3du9r9byyfg7sys8ib6p3ey",
        "attachments": [],
        "otherOptions": {}
      },
      "credentials": {
        "mattermostApi"...