#### URL Expired

The URL for this request expired after 30 days.

Optional metadata when starting an operation.

| Field          | Type    | Description |
| -------------- | ------- | ----------- |
| OperationID    | string  | Unique operation identifier. |
| InitiatorID    | string  | Initiator identifier. |
| ChainName      | string  | CAIP19 |
| Asset          | string  | required |
| TestNetwork    | boolean | truefalse |
| DataToSign     | string  | required |
| TypeOfSigning  | string  | required |
| Source         | object  | required Identifies an on-chain address in transaction intents and related APIs. Either set both `MasterKeyName` and `AccountName` (with optional `AddressIndex` where the API allows it; index `0` is the main address when deriving), or set `Address` to a literal address string. Setting only one of `MasterKeyName` or `AccountName` is invalid. For [`POST /solana/accountInfo`](https://vault.docs.blockdaemon.com/reference/cwpstartgenericsigning-1#/paths/~1solana~1accountInfo/post), when not sending `Address`, `AddressIndex` is required alongside master key and account.

Source object

# `` 200      Operation started

# `` 400      Invalid input, validation error, or malformed request

# `` 500      Internal server error. May include an `errorCode` (M-prefixed) and `data` from the MPA error code system. See `cwpapi/errors.go` for codes.

Base URL

https://api.your-wallet.blockdaemon-wallet.com/api/cwp/operations/start/genericSigning

```
curl --request POST \
     --url https://api.your-wallet.blockdaemon-wallet.com/api/cwp/operations/start/genericSigning \
     --header 'accept: application/json' \
     --header 'content-type: application/json'
```

application/json

``200``400``500