Advanced-Account liquidation

Number of APIs: 5

1. Account closure DELETE {{proxiedPublicURL}}/accounts/{{latestAccountID}}

2. Liquidate an account POST {{proxiedPublicURL}}/accounts/{{latestAccountID}}/liquidations

3. Retrieve a account liquidation GET {{proxiedPublicURL}}/accounts/{{latestAccountID}}/liquidations/{{latestLiquidationID}}

4. Account group closure DELETE {{proxiedPublicURL}}/account_groups/{{latestAccountGroupID}}

5. Offboard a user DELETE {{proxiedPublicURL}}/users/{{latestUserID}}