> For the complete documentation index, see [llms.txt](https://docs.union.finance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.union.finance/developers/core/usermanager/usermanagererc20.md).

# UserManagerERC20

### stakeWithERC20Permit

```solidity
function stakeWithERC20Permit(uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external
```

@dev Stake using ERC20 permit @param amount Amount @param deadline Timestamp for when the permit expires @param v secp256k1 signature part @param r secp256k1 signature part @param s secp256k1 signature part