In the README of every data model now there is a new line in the Dynamic examples section, under the text
“Link to the Generator of NGSI-LD keyvalues payloads compliant with this data model. Refresh for new values”
The link provides an example of a NGSI keyvalues payload with values compliant with the data types of this smart data model but generated randomly (so it does not look like static examples which actually are coming from real examples)