List destinations for the Conversions API

Returns the list of pixels (Meta) or conversion actions (Google) accessible to the connected ads account. Use the returned `id` as `destinationId` when posting to `POST /v1/ads/conversions`. For Google, each destination's `type` reflects the conversion action's category (PURCHASE, LEAD, SIGN_UP, etc.) — the event type is locked to the destination. For Meta, `type` is absent: pixels accept any event name per request.

curl -X GET "https://zernio.com/api/v1/accounts/string/conversion-destinations"

{
  "platform": "metaads",
  "destinations": [
    {
      "id": "string",
      "name": "string",
      "type": "string",
      "status": "active"
    }
  ]
}

{
  "error": "Unauthorized"
}