Show user phone number

curl --request GET \
  --url https://api.rootly.com/v1/phone_numbers/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "24935dcc-f342-4e52-89bd-4643a09adad5",
    "type": "user_phone_numbers",
    "attributes": {
      "user_id": 561,
      "phone": "+19497064846 x8859",
      "primary": true,
      "created_at": "2025-11-06T13:30:54.301-08:00",
      "updated_at": "2025-11-06T13:30:54.403-08:00"
    }
  }
}