Get Ethena Participants

Get EOA wallet addresses (not SCW) that may have earned Ethena sats.

This is a helper function that an ethena script will call (in the ethena sat integration repo).
Ethena Repo: https://github.com/ethena-labs/ethena_sats_adapters

For each participant returned by this endpoint, the ethena integration script will:
1. Calculate the % of vault.totalSupply() held by user
2. Calculate the effective ethena balance by user