> For the complete documentation index, see [llms.txt](https://sdk.unlockd.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sdk.unlockd.finance/getting-started/code-examples/borrow-signature.md).

# Borrow Signature

```typescript
import {ActionRequest, UnlockdApi} from "@unlockdfinance/unlockd-ts";
const api= new UnlockdApi()

const params: ActionRequest = {
  loanId: '0x123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef0',//Optional
  nfts: [{collection: '0x1234567890abcdefABCDEF1234567890abcdefAB', tokenId: 'testTokenId'}]//Optional 
}
const authToken = await api.borrowSignature(authToken, params)
```