def get_user_by_key(id, key, fields = {})
      data = {
          'id' => id,
          'key' => key,
          'fields' => fields
      }
      api_get(:user, data)
    end
def get_user_by_key(id, key, fields = {})
      data = {
          'id' => id,
          'key' => key,
          'fields' => fields
      }
      api_get(:user, data)
    end
Get user by specified key