Get Price Reference History

curl -X GET "https://api.trusset.org/orderbooks/stocks/api/order-books/ob_abc123/price-reference/history?limit=20" \
  -H "x-api-key: trusset_{instanceRef}_{secret}"

{
  "success": true,
  "data": [
    {
      "price": "100000000000000000000",
      "source": "EXTERNAL_FEED",
      "timestamp": "2025-01-15T10:29:30.000Z"
    },
    {
      "price": "99800000000000000000",
      "source": "EXTERNAL_FEED",
      "timestamp": "2025-01-15T10:28:30.000Z"
    }
  ],
  "metadata": {
    "requestId": "550e8400-e29b-41d4-a716-446655440000",
    "timestamp": "2025-01-15T10:30:00.000Z",
    "instanceId": "inst_abc"
  }
}