curl --request POST \
  --url https://api.tilt.io/api/v1/custom/org/{organization_uuid}/clients/{client_uuid}/accounts/{account_uuid}/proposal/ \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "optimized_weights": [
    {
      "ticker": "<string>",
      "weight": "<string>"
    }
  ]
}
'

{
  "proposal_uuid": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "cash_buffer_cad_amount": "<string>",
  "cash_buffer_usd_amount": "<string>",
  "orders": [
    {
      "ticker": "<string>",
      "ticker_symbol": "<string>",
      "amount": "<string>",
      "tax_lots": [
        {
          "cost_basis": "<string>",
          "quantity": "<string>",
          "trade_date": "2023-12-25",
          "gain": "<string>"
        }
      ],
      "fx_cost_breakdown": {
        "base_amount_usd": "<string>",
        "fx_rate": "<string>",
        "fx_fee_percentage": "<string>",
        "fx_fee_amount_usd": "<string>",
        "net_amount_usd": "<string>"
      },
      "amount_usd": "<string>",
      "existing_quantity": "<string>",
      "existing_weight": "<string>",
      "existing_market_value": "<string>",
      "target_weight": "<string>"
    }
  ]
}