curl --request POST \
  --url https://api.getoutbox.ai/contacts \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "full_name": "<string>",
  "email": "<string>",
  "phone_number": "<string>",
  "tags": [
    "<string>"
  ]
}
'