curl --request GET \
  --url https://alphainsider.com/api/getMaxOrderSize \
  --header 'Authorization: <authorization>'

{
  "strategy_id": "8wj376E0-inI2K7LLwyA0",
  "stock_id": "4O2LdycOEifZlfcqYvghk",
  "buying_power_total": "2",
  "selling_power_amount": "0.00002",
  "remaining_liabilities_total": "0",
  "remaining_assets_amount": "0"
}