Update an account

{
  "account": {
    "name": "Example Account",
    "accountUrl": "https://www.example.com",
    "owner": 1,  
    "fields": [
      {
        "customFieldId": 9,
        "fieldValue": "500-1000"
      },
      {
        "customFieldId": 20,
        "fieldValue": 1234,
        "fieldCurrency": "GBP"
      }
    ]
  }
}

{
    "account": {
        "name": "Exmaple Account",
        "accountUrl": "https://www.example.com",
        "createdTimestamp": "2019-04-03T13:57:31-05:00",
        "updatedTimestamp": "2019-06-12T16:55:32-05:00",
        "links": [],
        "fields": [
            {
                "customFieldId": 9,
                "fieldValue": "501 - 1000",
                "accountId": "1"
            },
            {
                "customFieldId": 20,
                "fieldValue": 1234,
              	"fieldCurrency": "GBP",
                "accountId": "1"
            }
        ],
        "id": "1"
    }
}