When I run a request for a topic, the response is not deserialized properly. This is b/c the received JSON looks like this:

{
   "data":{
      "_id":"655b65b487e0d9949d7b4b70",
      "_environmentId":"655353e41bf45431ece3fddd",
      "_organizationId":"655353e31bf45431ece3fdd7",
      "key":"83f89d49-1c47-4217-a10c-26386e701bf4",
      "name":"Topic for 1963bc86-945b-4a9c-9728-4b03e752397c",
      "subscribers":[]
   }
}

, but the struct GetTopicResponse doesn't expect data but the inner item:

type GetTopicResponse struct {
	Id             string   `json:"_id"`
	OrganizationId string   `json:"_organizationId"`
	EnvironmentId  string   `json:"_environmentId"`
	Key            string   `json:"key"`
	Name           string   `json:"name"`
	Subscribers    []string `json:"subscribers"`
}

I can imagine this also applies to other requests I did not stumble upon. I could create a PR for GetTopicResponse, but I'm not sure whether that's the way to go or whether you're generating your SDKs from another place. :)