REST Connector - Remove Entitlement is not working in Saviynt but works in POSTMAN

[IAM_99]

Hi Team,  We have REST application - trying to remove entitlement using below JSON:

{
"accountIdPath": "accountName",
"call": [{
"name": "Entitlements",
"connection": "userAuth",
"httpMethod": "PATCH",
"url": "https://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx-management/v1/users/entitlements/${entitlementValue.entitle...}",
"httpParams": "{\"username\":\"${account.accountID}\"}",
"httpHeaders": {
"Authorization": "${access_token}",
"Accept": "application/json"
},
"Content-Type": "application/json",
"successResponses": {
"statusCode": [
200,
201,
202,
203,
204
]
}

}]
}

Gives 200 response and Task is getting Completed. But its not removing from the target.

Same if I try in POSTMAN its removing from target. 

please find POSTMAN screens 

That means my JSON conversion has an issue ?

[rushikeshvartak]

change account.accountID to account.name

[IAM_99]

i have tried changing to name but  its not working, any other inputs 

[rushikeshvartak]

Does your entitlement type is correct ?

change entitlementid to entitlement_value