Databricks dialects does not seem to support Type Json

> CompileError: (in table 'runs', column 'params'): Compiler <sqlalchemy.sql.compiler.GenericTypeCompiler object
at 0x16e361210> can't render element of type JSON

This is part of the definition of my tables
```python
class SomeTable(Base):
    params = Column(JSON, nullable=False, default={})
    ...
```

Is there a workaround or recommended way to deal with JSON type?