SharePoint Online: Set Single Value User Profile property with REST API

Set.Single.UserProfileProperty.js

(function ($) {
    'use strict';

    var requestHeaders = {
        'X-RequestDigest': $("#__REQUESTDIGEST").val(),
        "accept": "application/json; odata=nometadata",
        "content-type": "application/json;odata=nometadata"
    };

    var userData = {
        'accountName': "i:0#.f|membership|user@yourtenant.onmicrosoft.com",
        'propertyName': 'AboutMe', //can also be used to set custom single value profile properties
        'propertyValue': 'Value set from REST API!'
    }

    $.ajax({
        url: _spPageContextInfo.webAbsoluteUrl + "/_api/SP.UserProfiles.PeopleManager/SetSingleValueProfileProperty",
        type: "POST",
        headers: requestHeaders,
        data: JSON.stringify(userData),
        success: function (data) {
            console.log(data)
        },
        error: function (jqxr, errorCode, errorThrown) {
            console.log(jqxr.responseText);
        }
    });

})(jQuery);