Generate Video Access token (JWT) with Twillio Go SDK

I am failing to create an Access Token for the Twillio Video Product with the golang SDK
In the docs there is golang sadly not mentioned

Does anyone of you know how I can create the required access token?

The JWT package mentioned in the examples of the other languages can not be found in the Go SDK.

I found that it is just not possible to do it with the default go SDK. I did follow the instructions on https://www.twilio.com/docs/iam/access-tokens and build the JWT myself. Maybe someone will find the solution handy:

package main
import (
"encoding/json"
"fmt"
"github.com/dvsekhvalnov/jose2go"
"log"
"time"
)
func main() {
accountSid := "XXX"
keySid := "YYY"
keySecret := "ZZZ"
username := "Simon"
roomName := "SimonsRoom"
now := time.Now()
type JWTPayload struct {
Jti                    string `json:"jti"`
Issuer                 string `json:"iss"`
Subject                string `json:"sub"`
CreationUnixTimestamp  int64  `json:"iat"`
NotBeforeUnixTimestamp int64  `json:"nbf"`
ExpiresUnixTimestamp   int64  `json:"exp"`
Grants                 struct {
Identity string `json:"identity"`
Video    struct {
Room string `json:"room"`
} `json:"video"`
} `json:"grants"`
}
payload := JWTPayload{
Jti:                    fmt.Sprintf("%s-%d",keySid,now.UnixNano()),
Issuer:                 keySid,
Subject:                accountSid,
CreationUnixTimestamp:  now.Unix(),
NotBeforeUnixTimestamp: now.Unix(),
ExpiresUnixTimestamp:   now.Add(23*time.Hour).Unix(),
Grants: struct {
Identity string `json:"identity"`
Video    struct {
Room string `json:"room"`
} `json:"video"`
}{
Identity: username,
Video: struct {
Room string `json:"room"`
}{
Room: roomName,
},
},
}
payloadByte, err := json.Marshal(payload)
if err != nil {
log.Fatal(err)
}
token, err := jose.SignBytes(payloadByte, jose.HS256, []byte(keySecret),
jose.Header("cty", "twilio-fpa;v=1"),
jose.Header("typ", "JWT"),
jose.Header("alg", "HS256"),
)
if err != nil {
log.Fatal(err)
}
fmt.Println(token)
}