rewardTokens[0] = gmxBaseReward;
rewardTokens[1] = gmxBaseReward;
rewardTokens[2] = ERC20(pxGmx); // esGMX rewards distributed as pxGMX
rewardTokens[3] = ERC20(pxGmx);
struct ProducerToken {
    ERC20[] rewardTokens;
    GlobalState globalState;
    mapping(address => UserState) userStates;
    mapping(ERC20 => uint256) rewardStates;
    mapping(address => mapping(ERC20 => address)) rewardRecipients;
}

// Producer tokens mapped to their data
mapping(ERC20 => ProducerToken) public producerTokens;
