curl --request POST \
  --url https://api.precallai.com/api/v1/playground/call \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "first_name": "<string>",
  "last_name": "<string>",
  "email": "<string>",
  "phone_number": "<array>",
  "assistant_id": "<string>",
  "dialer_id": "<string>"
}
'

{
  "first_name": "<string>",
  "last_name": "<string>",
  "email": "<string>",
  "phone_number": "<array>",
  "assistant_id": "<string>",
  "dialer_id": "<string>"
}