BENGALURU, Aug 2 (Reuters) - SoftBank Group-backed PB Fintech Ltd, the parent of Indian online insurance platform Policybazaar, has filed for an initial public offering of up to 60.18 billion rupees ($809.36 million), draft papers here filed with the market regulator showed. ($1 = 74.3550 Indian rupees) (Reporting by Chris Thomas in Bengaluru; Editing by Ramakrishnan M.) Our Standards: The Thomson Reuters Trust Principles.