Get Campaign by ID

curl --request GET \
  --url https://app.levanta.io/api/creator/v1/cpc/{campaign_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "startDate": "<string>",
  "endDate": "<string>",
  "cancellationDate": "<string>",
  "product": {
    "asin": "<string>",
    "marketplace": "amazon.com",
    "title": "<string>"
  },
  "brandId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "budget": {
    "costPerClick": 123,
    "clicks": 123,
    "clicksRemaining": 123,
    "reached": true
  },
  "membership": {
    "earnings": {
      "clicks": 123,
      "amount": 123,
      "currency": "USD"
    },
    "joinDate": "<string>",
    "removed": true
  }
}