func SendToTrustSQL(content map[string]interface{}) (*tsiss.IssAppendResponse, error) {
    privateKey := "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
    client, _ := trustsql.NewClient(privateKey)
    client.SetIssRequestTimeout(5 * time.Second)
    //testURI := ""
    //client.SetAppendIssURI(testURI)
    accountAddr := client.GetAddrByPubkey()
    pubKey := client.GetPublicKey()
    issAppend := &tsiss.IssAppend{
        Version:  "1.0",
        SignType: "ECDSA",
        MchID:    "gbxxxxxxxxxxxxxxx",
        //MchSign:     "",
        Account:    string(accountAddr),
        CommitTime: time.Now().Format("2006-01-02 15:04:05"),
        //Content:    map[string]interface{}{"c": "The Times 03/Jan/2009 Chancellor on brink of second bailout for banks"},
        Content: content,
        InfoKey: bson.NewObjectId().Hex(),
        //InfoKey:     "1242123jjj",
        InfoVersion: "1",
        State:       "0",
        Notes:       map[string]interface{}{"notes": "comments"},
        PublicKey:   pubKey,
        Sign:        "",
        ChainID:     "ch_tencent_test",
        LedgerID:    "ld_tencent_iss",
    }
    signStr, err := client.GetIssSignStr(issAppend)
    if err != nil {
        fmt.Printf("get issSignStr error: %s\n", err)
        return nil, err
    }

    issAppend.Sign = client.SignString(signStr, true)
    appendRes, err := client.AppendIss(issAppend)
    if err != nil {
        fmt.Printf("append error: %s\n", err)
        return nil, err
    }
    //fmt.Printf("appendRes: %+v\n", appendRes)
    return appendRes, nil
}