Pops an aggregator from the crank.

| Field | Type | Description |
|--|--|--|
| stateBump |  u8 | The [SbState](/idl/accounts/SbState) bump used to derive its public key. |
| leaseBumps |  bytes |  |
| permissionBumps |  bytes |  |
| nonce |  Option&lt;u32&gt; |  |
| failOpenOnAccountMismatch |  Option&lt;bool&gt; |  |
