Inefficient Encoding of Manageable Entities

One proposal for tightening up the encoding is to limit queries and responses to a singe type (I'll raise this as a separate issue). If this is done, then the type-name is implicitly known and the set of attributes (columns) is consistent across entities (rows). The encoding could then be a list of lists, the first list provides the attribute names (column headers) and the subsequent lists provide the values (rows).