How to create recruiting Agency and Agent via APIs?

Summary:

We have two separate Fusion instances. When a recruitment Agency and Agents are added to one, we would like to add them to the second instance automatically (avoiding users re-keying the data).

Our thought was to extract this information from the first instance using APIs and then reload them into the second.

Are there any APIs to achieve this or other mechanisms such as HDL Loaders?

Thanks

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