Describe the bug
Swagger documentation for accounts at:

• GET /{scopeId}/accounts
• POST /{scopeId}/accounts
• GET /{scopeId}/accounts/{accountId}
• PUT /{scopeId}/accounts/{accountId}

Mistakenly shows expirationDate: 2019-31-12T00:00:00.000Z as an example value for the expiration date.
The value 2019-31-12T00:00:00.000Z is wrong and the correct one should be 2019-12-31T00:00:00.000Z.

Check the OpenAPI specification as well and fix if necessary.