curl --request POST \
  --url https://tars.loopscale.com/v1/markets/creditbook/borrow \
  --header 'Content-Type: application/json' \
  --header 'payer: <payer>' \
  --data '
{
  "loan": "<string>",
  "borrowParams": {
    "amount": 123,
    "expectedLoanValues": {
      "expectedApy": 123,
      "expectedLqt": [
        123
      ]
    },
    "assetIndexGuidance": [
      123
    ],
    "duration": 123,
    "skipSolUnwrap": true
  },
  "strategy": "<string>",
  "refinanceParams": {
    "ledgerIndex": 123,
    "durationIndex": 123,
    "assetIndexGuidance": [
      123
    ]
  },
  "isLoop": true
}
'

{
  "message": "<string>",
  "signatures": [
    {
      "publicKey": "<string>",
      "signature": "<string>"
    }
  ]
}