I am testing with netapp ontap na ontap

[dawn marsh]

I think the solution is in the examples here:
https://docs.ansible.com/ansible/devel/collections/netapp/ontap/na_ontap_rest_cli_module.html#ansible-collections-netapp-ontap-na-ontap-rest-cli-module
the Rest CLI module is a bit different than the command module

[tacit hemlock]

probably this is what you need

• name: Online SVM
  netapp.ontap.na_ontap_rest_cli:
  <<: *clusterlogin
  command: 'vserver/start'
  verb: 'POST'
  body: { "vserver":"svm3" }

[acoustic tree]

It worked ! 🙂