null

{
  "statusCode": 400,
  "error": "Bad Request",
  "message": "Invalid email address"
}

{
  "statusCode": 401,
  "error": "Unauthorized",
  "message": "NO_TOKEN_PROVIDED"
}

{
  "statusCode": 409,
  "error": "Conflict",
  "message": "TOTP_ALREADY_INACTIVE"
}