JIRA API : Update drop down custom field using jira rest api

I have updated the drop down custom field value of an issue using jira api,

https://domainname.atlassian.net/rest/api/3/issue/{issue id}

and the below payload,

{
"fields": {
        "customfield_11160": {
            "value": "Yes"
        }
    }
}

and the values are getting updated properly, but when i try to get the same issue using get api

https://domainname.atlassian.net/rest/api/2/issue/{issue id}

the following response is i get,

{
"fields": {
        "customfield_11160": {
            "self": "https://<domainname>.atlassian.net/rest/api/2/customFieldOption/11752",
            "value": "TC update required",
            "id": "11752"
        }
    }
}

but am not sure about whether am using or updating in the right way and afraid that it may corrupt the DB in a way.

Am i passing the payload in right way? or should it be modified to updated the field properly?

so please guide me through.