itests/src/test/resources/patch5.json

{
  "itemId": "sendMailAction-patch1",
  "patchedItemId": "sendMailAction",
  "patchedItemType": "action",
  "operation": "patch",
  "data": [
    {
      "op": "replace",
      "path": "/metadata/systemTags",
      "value": [
        "profileTags",
        "event",
        "allowMultipleInstances"
      ]
    }
  ]
}