func (p *PuppetService) FriendshipAdd(contactID, hello string) (err error) {
    log.Tracef("PuppetService FriendshipAdd(%s, %s)\n", contactID, hello)
    _, err = p.grpcClient.FriendshipAdd(context.Background(), &pbwechatypuppet.FriendshipAddRequest{
        ContactId: contactID,
        Hello:     hello,