curl --request POST \
  --url https://{portalApiUrl}/user_grp/edit/{id} \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "user_grp_group_admin": 1
}
'

{
  "status": true,
  "result": {
    "user_grp_id": 123,
    "user_grp_grp_id": 123,
    "user_grp_user_id": 123,
    "user_grp_group_admin": 123,
    "user_grp_created_date": "2023-11-07T05:31:56Z",
    "user_grp_updated_date": "2023-11-07T05:31:56Z"
  }
}