Just to be clear, are you looking for a provider to process these requests on your behalf for 3rd parties or are you wanting to ask Claude to process your Erasure request to Calude's owner Anthropic, for example?
The latter. They currently provide a method for requests related to account information but not for the information contained in their models or training datasets.
I think they just want to submit requests the old fashioned way (email, web form, phone, etc) and have the provider comply.