curl --request POST \
  --url https://api.oneinbox.ai/voice/api/call/outbound \
  --header 'Api-Key: <api-key>' \
  --header 'Api-Secret: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "number": "<string>",
  "customer_num": "<string>",
  "country_code": 123
}'

{
  "message": "Call placed successfully",
  "code": 200,
  "data": {
    "call_id": "call_9eefaa9e9xxxxxxxxxxd88d4256"
  }
}