USPS-REST - Address Validation City/State from Zip

{
    "carrier": "USPS-REST",
    "action": "AddressValidate",
    "params": {
      "key": "your-key-from-authenticate-request",
      "to_code": "92101",
      "test": true
    }
  }

<?php
$rs = new RocketShipIt;
$response = $rs->request(
array (
  'carrier' => 'USPS-REST',
  'action' => 'AddressValidate',
  'params' => 
  array (
    'key' => 'your-key-from-authenticate-request',
    'to_code' => '92101',
    'test' => true,
  ),
)
);

rs.request(
  {'action': 'AddressValidate',
 'carrier': 'USPS-REST',
 'params': {'key': 'your-key-from-authenticate-request',
            'test': True,
            'to_code': '92101'}}

)

rs.request(
  {"carrier"=>"USPS-REST",
 "action"=>"AddressValidate",
 "params"=>
  {"key"=>"your-key-from-authenticate-request",
   "to_code"=>"92101",
   "test"=>true}}

)

rocketshipit.request(
  {
    "carrier": "USPS-REST",
    "action": "AddressValidate",
    "params": {
      "key": "your-key-from-authenticate-request",
      "to_code": "92101",
      "test": true
    }
  }
)