curl --request GET \
  --url https://api.zavu.dev/v1/phone-numbers/{phoneNumberId} \
  --header 'Authorization: Bearer <token>'

{
  "phoneNumber": {
    "id": "<string>",
    "phoneNumber": "+15551234567",
    "capabilities": [
      "sms",
      "voice"
    ],
    "status": "active",
    "pricing": {
      "monthlyPrice": 123,
      "upfrontCost": 123,
      "monthlyCost": 123,
      "isFreeNumber": true
    },
    "createdAt": "2023-11-07T05:31:56Z",
    "name": "<string>",
    "senderId": "<string>",
    "nextRenewalDate": "2023-11-07T05:31:56Z",
    "updatedAt": "2023-11-07T05:31:56Z"
  }
}