Unity- Azure Spatial Anchors - Cosmos DB - How can to add extra JSON Column to the database

So I need an extra column called Totems which is just a string or JSON. I made this column in the data editor in the Azure Cosmos DB but I still need to fix this in the code and create a GET/POST for Totem. I found this file called TableEntity as shown in the picture but I am unable to edit this metadata file. I dont have access to edit this. So now I am stuck...