HONG KONG, May 27 (Reuters) - Shares of tycoon Jimmy Lai’s Next Digital Ltd were set to surge 142% on resumption of trade on Thursday, a week after authorities froze assets of its jailed owner under a sweeping national security law imposed on the financial hub by Beijing. Next Digital, which had a market value of HK$490 million based on its last trading price of HK$0.186 before a suspension, was set to open at HK$0.45. It was quoted up as much as 3,125% in pre-trade.