def get_plot_sig(to_sign, _) -> G2Element:
    if (to_sign == request.challenge_chain_sp):
        return request.challenge_chain_sp_signature
    elif (to_sign == request.reward_chain_sp):
        return request.reward_chain_sp_signature
    return G2Element()
def get_plot_sig(to_sign, _) -> G2Element:
    if (to_sign == request.challenge_chain_sp):
        return request.challenge_chain_sp_signature
    elif (to_sign == request.reward_chain_sp):
        return request.reward_chain_sp_signature
    return G2Element()