curl --request POST \
  --url https://api.open.cx/contacts \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "contact": {
    "email": "[email protected]",
    "phone": "<string>",
    "name": "<string>",
    "custom_data": {},
    "http_action_overrides": {
      "query_params": {},
      "path_params": {},
      "body_params": {},
      "headers": {}
    }
  }
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}