{
  "createPayment": {
    "ik": "hvac_invoice-1-v1",
    "ledgerIk": "hvac-contractor",
    "type": "hvac_invoice",
    "typeVersion": 1,
    "parameters": {
      "invoice_id": "1",
      "amount": "10000"
    }
  },
  "addLedgerEntry": {
    "ik": "hvac_invoice_approve-1-v1",
    "entry": {
      "ledger": {
        "ik": "hvac-contractor"
      },
      "type": "hvac_invoice_approve",
      "typeVersion": 1,
      "parameters": {
        "invoice_id": "1",
        "amount": "10000"
      }
    }
  }
}