Get funding payment history across all or filtered perpetual connectors.

This endpoint retrieves historical funding payment records including funding rates, payment amounts, and position data at time of payment.

Args: filter_request: JSON payload with filtering criteria

Returns: Paginated response with funding payment data and pagination metadata

Raises: HTTPException: 500 if there's an error fetching funding payments

{
  "data": [],
  "pagination": {
    "has_more": true,
    "limit": 100,
    "next_cursor": "2024-01-10T12:00:00",
    "total_count": 500
  }
}