ROS2 Declaring Dictionary Parameter Python

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Is there a good substitute to declare a parameter with a dictionary value in ROS2 as it seems that dictionaries aren't supported for it? For example, I tried

node.declare_parameter('parameter_name', dict())

but got the error message

TypeError: The given value is not one of the allowed types.

I'm currently trying to port an existing ROS1 project to ROS2 and this parameter had initially been a dictionary already so I'd ideally like to make pretty minimal changes.

Does anyone know a good way around this?