Submit an asynchronous bulk operation, using 'Basic <API_KEY>'.
Submit an asynchronous bulk operation, using ‘Basic <API_KEY>’. Requires the bulk API
capability on your application, and the scopes the operation needs on each target user’s
grant. GET_TRANSACTIONS_EXPORT, GET_BALANCES_EXPORT, CREATE_TRANSFER, and
DEPOSIT_CASH_BALANCE accept up to 10,000 targets; UPDATE_TRANSACTION_METADATA executes
synchronously and accepts at most 100 edits in total. Creates one job with one item per
resolved target and returns immediately; poll the job to follow progress. Idempotent on your
idempotency key: an identical resubmit returns the existing job, and reusing a key with a
different request is rejected. A submission with no eligible targets is rejected.