Get subscriber global preferences

curl --request GET \
  --url https://api.novu.co/v1/subscribers/{subscriberId}/preferences/{level}

{
  "data": [
    {
      "template": {
        "_id": "<string>",
        "name": "<string>",
        "critical": true,
        "triggers": [
          "<string>"
        ]
      },
      "preference": {
        "enabled": true,
        "channels": {
          "email": true,
          "sms": true,
          "in_app": true,
          "chat": true,
          "push": true
        }
      }
    }
  ]
}