Has anyone a simple example of using curl or Go to access the API?

I'm a developer, and want to get started exploring the API, but the examples Mr Google shows me all fail with "Cannot convert access token to JSON" (;-))

My team is using the CLI, domoUtil-2.43.jar and I have an authentication token which happily works with

(echo connect -t ${ACCESS_TOKEN} -s indexexchange.domo.com; \
 echo list-datasource) |\
java -jar ./domoUtil-2.43.jar

I, on the other hand, want to query with curl or Golang, so we can get some specific information about upload dates, but 

curl -v -i -H 'Content-Type: application/json' 
	-H 'Accept: application/json' 
	-H "Authorization: bearer ${ACCESS_TOKEN} 
	'https://api.domo.com/v1/datasets?sort=name&offset=2&limit=10'

return a failure, www-authenticate: Bearer realm="oauth2-resource", error="invalid_token", error_description="Cannot convert access token to JSON"

Does anyone have a know working example using curl or wget? In the meantime, I'll try an unoficial  Golang  library from Jumbo.