This is used to modify specific fields on a Customer. Notably this is without having to perform a full GET and then PUT of the full customer object. In all cases, id is required. To change a property value, a pairing of the parameter to modify, the new target value for that parameter, and then an additional Boolean parameter to indicate the change to that parameter. For example, to update a company name, `"companyName"="your new company name"andcompanyNameSet=true` See examples for more details.