neutron-lib/api-ref/source/v2/samples/sfc-classifiers/flow-classifier-update-req.json

{
     "flow_classifier": {
         "id": "4a334cd4-fe9c-4fae-af4b-321c5e2eb051",
         "name": "FC1",
         "tenant_id": "1814726e2d22407b8ca76db5e567dcf1",
         "description": "Flow rule for classifying TCP traffic"
     }
}