Create user

{
  "success": false,
  "error": "Missing request body",
  "description": "Request body is required with email" 
}

{
  "success": false, 
  "error": "Missing required fields", 
  "description": "email is required"
}

{
  "success": false, 
  "error": "Invalid email", 
  "description": "Please provide a valid email address"
}

{
  "success": false, 
  "error": "Invalid country code", 
  "description": "countryCode must be a 2-letter country code (e.g., \"US\", \"GB\", \"FR\")"
}

{
  "success": false, 
  "error": "Invalid JSON", 
  "description": "The request body contains invalid JSON. Please check for syntax errors like trailing commas or missing quotes."
}

{
  "success": false, 
  "error": "User already exists", 
  "description": "A user with email [email protected] already exists in this project for TEST mode"
}

{
  "success": false, 
  "error": "Internal Server Error", 
  "description": "An unexpected error occurred while creating the project user. Please try again or contact support if the issue persists."
}