Dry-run audience count

curl --request POST \
  --url https://api.wazapin.com/v1/campaigns/dry-run-audience \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "audience_source_id": "<string>",
  "audience_source_type": "<string>",
  "contact_ids": [
    "<string>"
  ]
}
'

{
  "data": {
    "count": 123
  }
}