delete https://data.lucid.app/sourceGrants/
Removes the specified data source grant ONLY if it's not the last data source grant. There must always be at least one data source grant for a given data source, therefore the last data source grant cannot be deleted. A response message is returned with the result of the deletion. Note that the id in the URI is the number at the end of the data source grant's URI, not the identifier field of the Data Source Grant.