Get current positions across all or filtered perpetual connectors.
This endpoint fetches real-time position data directly from the connectors, including unrealized PnL, leverage, funding fees, and margin information.
Args: filter_request: JSON payload with filtering criteria
Returns: Paginated response with position data and pagination metadata
Raises: HTTPException: 500 if there’s an error fetching positions
Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.