There are a list of available work-types in the workflow api.

To create a work unit, there is a config block with the work configuration settings, with the fields listed in the workflow.

curl -s -H "Authorization: $LIOKEY" \
  -XPOST "https://api.lytics.io/api/work" -d '
{
    "workflow_id":"eventscopy"
    , "name":"Ecommerce Demo Copy"
    , "config":{
        "destination_aid": "2223"
    }
}
' | jq '.'