Hydra config: using another config as an input to multiple keys within a config

Suppose I have the following directory structure for my hydra configs:

config    |_config.yml    operations        |_subconfig.yml

subconfig.yml is

param_1: fooparam_2: bar

and config.yml is:

operations:    signals:        signal_a:            param_1: foo            param_2: bar        signal_b:            param_1: foo            param_2: bar    timestamps:        ts_1:            param_1: foo            param_2: bar

Instead of repeating param_1 and param_2 in my main config, I want to use subconfig to fill these parameters as a default. I know that I could do it if I used the defaults list and just replaced param_1 and param_2 at the top level of my main config. But I`m struggling to figure it out how to replace the values of subkeys within the main config by the values within the subconfig file. Is there any way to do this?