# Vault Address Approval

## Parameters

- **vault_address**  
  `string`  
  *required*  
  Vault address

- **depositor_address**  
  `string`  
  Address of the depositor

- **amount**  
  `string`  
  Amount of USDC to approve. Accepts whole numbers or decimals (e.g. 1000 or 1000.20)

- **network**  
  `string`  
  Network to approve on

## Response

### 201 Success

#### Object

- **data**  
  - **signing_payload**  
    `string`  
    Hex encoded payload to sign
  - **unsigned_transaction_serialized**  
    `string`  
    Hex encoding of the built transaction
  - **network**  
    `string`  
    Network name

## Example Request

```bash
curl --request POST \
     --url https://api.figment.io/opentrade/vaults/vault_address/approve \
     --header 'accept: application/json' \
     --header 'content-type: application/json' \
     --header 'x-api-key: your-api-key-here'
```

## Example Response

```json
{
  "data": {
    "signing_payload": "0x4e9e36c3032c59ff3dc186713ca6faad075c2c328182b207cda3b064ebd05690",
    "unsigned_transaction_serialized": "0x02f87183aa36a781c38459682f008459682f1a8301b77494fd4f11a2aae86165050688c85ec9ed6210c427a980b844095ea7b3000000000000000000000000d1f0774ccff0ce4f36dea57b6a28ab7feb0a01b00000000000000000000000000000000000000000000000000000000005f5e100c0",
    "network": "mainnet"
  }
}
```