tacker/samples/mistral/workflows/input/create_vnf.json

{
        "body": {
                "vnf": {
                        "attributes": {},
                        "vim_id": "",
                        "description": "Sample for tacker.create_vnf action",
                        "vnfd_id": "dda99d4c-f24d-4550-b104-0958fef427b3",
                        "name": "tacker-create-vnf"
                }
        }
}