Retrieves user phone numbers

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

{
  "data": [
    {
      "id": "f036b2d8-eab7-47a1-9b30-5cfe06186770",
      "type": "user_phone_numbers",
      "attributes": {
        "user_id": 548,
        "phone": "+14097406897 x5508",
        "primary": true,
        "created_at": "2025-10-18T10:31:19.862-07:00",
        "updated_at": "2025-10-18T10:31:19.862-07:00"
      }
    },
    {
      "id": "c9b9d22a-7dad-4d56-a58b-207461a4b8a1",
      "type": "user_phone_numbers",
      "attributes": {
        "user_id": 548,
        "phone": "+19373176966 x7874",
        "primary": false,
        "created_at": "2025-10-18T10:31:19.891-07:00",
        "updated_at": "2025-10-18T10:31:19.891-07:00"
      }
    }
  ],
  "links": {
    "self": "http://www.example.com/v1/users/548/phone_numbers?page%5Bnumber%5D=1&page%5Bsize%5D=50",
    "first": "http://www.example.com/v1/users/548/phone_numbers?page%5Bnumber%5D=1&page%5Bsize%5D=50",
    "prev": null,
    "next": null,
    "last": "http://www.example.com/v1/users/548/phone_numbers?page%5Bnumber%5D=1&page%5Bsize%5D=50"
  },
  "meta": {
    "current_page": 1,
    "next_page": null,
    "prev_page": null,
    "total_count": 2,
    "total_pages": 1
  }
}