CRUD Form templates object serialization question

New to Radzen and have run into a little issue and need some guidance:

I have a form which was created by the CRUD template. In it I have added a property attached to the forms class object which references another class (with a Foreign Key relationship setup in the model). The problem is the nested property object is not sent as part of the form submission of the parent object as it doesn't appear to be serialized properly on form submission as a json..Instead the form is being submitted simply with key value pairs of the form. Therefore the form post controller doesn't receive nested object data. Is there a preferred way to serialize the object properly before submission short of editing the CRUD generated designer.cs file?

I see ApplicatoinUsersController uses a {FromBody] System.Dynamic.ExpadoObject json object for the post but the templated controllers reference the model instead:[FromBody] models.db.object item

When referencing a nested object property of item the values are all null. ie:
item.object.value = null

Deep update is not supported by the official Microsoft OData that we are using in Radzen applications:

Thats unfortunate. Thanks for the update.