async updateUser(request) {
    const id = request.getId();
    const content = request.getBody();
    const userId = request.getKuid();
    const profileIds = isNil(content.profileIds)
      ? null
      : request.getBodyArray("profileIds");

    return this._changeUser(request, id, content, userId, profileIds);
  }
Updates an existing User

@param {Request} request
@returns {Promise<Object>}