Apply a portfolio conversion from a prepared workbook. The adjustment transaction exists once this returns, but its accounting is staged: the runner recomputes it after this command commits.

Example request

{
  "tokenSnapshots": [
    {
      "balance": "1.5",
      "fiatValue": "1.5",
      "lotSnapshots": [
        {
          "quantity": "1.5",
          "fiatValue": "1.5"
        }
      ]
    }
  ],
  "ledgerAccountSnapshots": [
    {
      "balance": "1.5"
    }
  ]
}