Paytm posted a narrower loss after winning more users, helped by a campaign to target customers such as small merchants. The SoftBank Group Corp.-backed fintech company reported a net loss of 3.57 billion rupees ($43.6 million) for the quarter ended June 30, compared with 6.44 billion rupees a year earlier. Analysts had estimated a loss of 3.33 billion rupees. Revenue from operations rose 39% to 23.4 billion rupees. The payment services provider is one of the biggest players in India’s...