Comma-separated list of a record's fields to be fetched. example - callId,startedAt,number,callingNumber,regionName,timezone,duration,totalCost,recordPath,messagesAsString,resultsString,emotion,robotCallDuration,robotCallTotalCost,hungUpBy,gender,nps,isAssistantRequest,markers,externalId,additional,currentStatusName,mainCallCost,mainCallDiscount,mainCallDuration,mainCallTotalCost,aiCallDuration,aiCallTotalCost,aiCallCost,aiCallLlmTotalCost,aiCallTtsTotalCost,aiCallSttTotalCost,autoCallCost,autoCallDiscount,autoCallDuration,autoCallTotalCost,robotCallCost,robotCallDiscount,transferCallCost,transferCallDiscount,transferCallDuration,transferCallTotalCost,companyId,allResults,depersonalized