Shape: {"tabs": [{"name": "...", "sections": [{"name": "...", "fields": [{"key": "...", "type": "text|number|boolean|select", "label": "..."}], "table_sourced": {"table": "partners", "object": "partner-info"}}]}]}.
Mark a section table_sourced (and leave fields empty) for objects read live from another table instead of authored by hand.