Решено:
$request = [
'ReportRequest' => new SoapVar(
[
'Format' => 'Csv',
'ReportName' => 'Bing Keyword Performance Report',
'ReturnOnlyCompleteData' => false,
'Aggregation' => 'Monthly',
'Sort' => array('SortColumn' => 'Clicks','SortOrder' => 'Ascending'),
'Scope' => ['AccountIds' => [$bClientId]],
'MaxRows' => '9000000',
'Time' => ['PredefinedTime' => $reportTimeFrame],
'Columns' => [
"Keyword",
"Spend",
"CampaignId",
"AdGroupId",
"AveragePosition",
"CurrentMaxCpc",
"KeywordId",
"BidMatchType",
"Impressions",
"Clicks",
"TimePeriod",
"QualityScore",
"ExpectedCtr",
"AdRelevance",
"LandingPageExperience",
"CampaignStatus",
"AdGroupStatus",
"KeywordStatus",
"AccountName",
"CampaignName",
"AdGroupName",
"BidStrategyType",
]
],
SOAP_ENC_OBJECT,
'KeywordPerformanceReportRequest',
"https://bingads.microsoft.com/Reporting/v13"
)];
$response = $SoapClient->SubmitGenerateReport($request);