403 Forbidden on PUT ../dashboard/{dashboardId}/items/{itemId}/properties/{propertyKey}

As per the documentation Set dashboard item property I get a 403 Forbidden response when trying to PUT to a propertyKey for a dashboard item.

The documentation states

The user who stores the data is required to have permissions to administer the dashboard item.

But I cannot find where in the documentation that I can set who can administer the dashboard item. What am I missing? I have a bunch of modules for this addon that work perfectly well, but funnily enough this is the first where I have had to add PUT/POST to the API, so this hasn’t come up.

As this is a dashboard item I had assumed all users who might have dashboard creation/edit rights would be able to also administer the plugin.

Were you ever able to resolve this one? Currently getting the same issue.