Bad JSON escape sequence: \e. Path 'Username', line 1, position 73.

eSpaceVer: Id=1, PubId=0, CompiledWith=11.9.0.17011
RequestUrl: https://appcodeplatform-mana-quality.internal.ericsson.com/ServiceCenter/ServiceStudio.asmx (Method: POST)
AppDomain: /LM/W3SVC/1/ROOT/ServiceCenter-4-132422009513492281
FilePath: E:\...\PS\running\ServiceCenter.01061458437\
ClientIp: 100.94.18.147
Locale: en-US
DateFormat: dd-MM-yyyy
PID: 10104 ('w3wp', Started='8/18/2020 4:52:18 AM', Priv=872Mb, Virt=2116194Mb)
TID: 243
Thread Name:
.NET: 4.0.30319.42000

Bad JSON escape sequence: \e. Path 'Username', line 1, position 73.
at ssServiceCenter.RssExtensionOMLProcessor.MssAudit(HeContext heContext, String inParamOperation, String inParamMessage, String inParamExtra)
at ssServiceCenter.Actions.ActionAudit_Operation(HeContext heContext, String inParamOperation, String inParamMessage, String inParamAuditTypeId, String inParamKey1, String inParamValue1, String inParamKey2, String inParamValue2, String inParamKey3, String inParamValue3, String inParamKey4, String inParamValue4, String inParamKey5, String inParamValue5, String inParamKey6, String inParamValue6, Boolean inParamSkip)
at ssServiceCenter.Actions.ActionAudit_APIError(HeContext heContext, String inParamOperation, String inParamUsername, String inParamAction, String inParamError, Boolean inParamRethrow, String inParamKey1, String inParamValue1, String inParamKey2, String inParamValue2, String inParamKey3, String inParamValue3, String inParamKey4, String inParamValue4, String inParamKey5, String inParamValue5, String inParamKey6, String inParamValue6, Boolean inParamSkip)
at ssServiceCenter.Actions.WsServiceStudio.WebSrvcServiceStudioRegisterOperation(HeContext heContext, String inParamusername, String inParamespacename, Int32 inParamOperationType)
   at ssServiceCenter.WebServices.ServiceStudio.RegisterOperation(String inWSusername, String inWSespacename, Int32 inWSOperationType)

Can you share your json? And how did you get this json?