POST api/Customer/edit-customer

{
  "Fields": {
    "AddressLine1": "sample string 1",
    "AddressLine2": "sample string 2",
    "AddressLine3": "sample string 3",
    "Country": "sample string 4",
    "CountryCode": "sample string 5",
    "County": "sample string 6",
    "CurrencyCode": "sample string 7",
    "Day": "sample string 8",
    "Month": "sample string 9",
    "Year": "sample string 10",
    "DOB": "sample string 11",
    "FirstName": "sample string 12",
    "Gender": "sample string 13",
    "LanguageCode": "sample string 14",
    "LastName": "sample string 15",
    "NotificationComPref": "sample string 16",
    "OddsDisplay": "sample string 17",
    "PostCode": "sample string 18",
    "TimeZoneCode": "sample string 19",
    "Title": "sample string 20",
    "Town": "sample string 21"
  },
  "Username": "sample string 1"
}

<EditCustomer xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Umbraco.Cms.FakeApiServer.Models">
  <Fields>
    <AddressLine1>sample string 1</AddressLine1>
    <AddressLine2>sample string 2</AddressLine2>
    <AddressLine3>sample string 3</AddressLine3>
    <Country>sample string 4</Country>
    <CountryCode>sample string 5</CountryCode>
    <County>sample string 6</County>
    <CurrencyCode>sample string 7</CurrencyCode>
    <DOB>sample string 11</DOB>
    <Day>sample string 8</Day>
    <FirstName>sample string 12</FirstName>
    <Gender>sample string 13</Gender>
    <LanguageCode>sample string 14</LanguageCode>
    <LastName>sample string 15</LastName>
    <Month>sample string 9</Month>
    <NotificationComPref>sample string 16</NotificationComPref>
    <OddsDisplay>sample string 17</OddsDisplay>
    <PostCode>sample string 18</PostCode>
    <TimeZoneCode>sample string 19</TimeZoneCode>
    <Title>sample string 20</Title>
    <Town>sample string 21</Town>
    <Year>sample string 10</Year>
  </Fields>
  <Username>sample string 1</Username>
</EditCustomer>

Sample not available.