| Name | Type | Description | Notes |
|---|---|---|---|
| signature | string | Base64url-encoded signature over the request's signable data, produced with the private key of a registered approval API key. If keyId is provided the signature must match that key; otherwise it is matched against all of the user's registered keys. | [default to undefined] |
| keyId | string | The ID of the approval API key used to sign the request. Optional — if omitted, the signature is verified against all of the user's registered approval API keys. | [optional] [default to undefined] |
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