src/Staff/Staff.php
public function update($account, $nickname)
    {
        $params = [
                   'kf_account' => $account,
                   'nickname' => $nickname,
                  ];

        return $this->parseJSON('json', [self::API_UPDATE, $params]);
    }
public function update($account, $nickname)
    {
        $params = [
                   'kf_account' => $account,
                   'nickname' => $nickname,
                  ];

        return $this->parseJSON('json', [self::API_UPDATE, $params]);
    }
Update a staff.

@param string $account
@param string $nickname

@return \EasyWeChat\Support\Collection