Backupset creation through api

Api : /commandcenter/api/Backupset

request:

{"entity":[{"clientName":"vCenter","backupsetName":"dummy_backup_set","instanceName":"VMware","appName":"Virtual Server"}]}

Currently using above endpoint and request and getting below error output

{

"errorMessage":"No application type is specified.","errorCode":1

}

Anybody having any idea regarding this?

Thank you in advance!!!