post https://{server_url}/{api_key}/eth/v1/validator/register_validator
Prepares the beacon node for engaging with external builders. The information will be sent by the beacon node to the builder network. It is expected that the validator client will send this information periodically to ensure the beacon node has correct and timely registration information to provide to builders. The validator client should not sign blinded beacon blocks that do not adhere to their latest fee recipient and gas limit preferences.
Note that requests containing currently inactive or unknown validator pubkeys will be accepted, as they may become active at a later epoch.