Creates a new insight for one or more users. Supported insight types are EXPENSE_RATIO_VERIFICATION, BALANCE_VERIFICATION, ACCOUNT_VERIFICATION, IDENTITY_VERIFICATION, and INCOME_VERIFICATION. Multi-user requests (1–10 users) are currently supported only for EXPENSE_RATIO_VERIFICATION.A single insight object is created referencing all users. The self link in the response uses the first userId from the users array.