@allen ,
Great question! I believe you just need to create a function that handles creating the SDK JWT and endpoint that will return the token. The endpoint should be a POST and take the meeting number and role.
POST http://localhost:8080
{
“meetingNumber”: “94843468909”,
“role”: 0
}
SDK JWT consists of three parts:
- Header: encoded data of the token type and the algorithm used to sign the data.
{
"alg": "HS256",
"typ": "JWT"
}
- Payload: encoded data of claims intended to share.
{
"appKey": SDK_KEY,
"sdkKey": SDK_KEY,
"mn": MEETING_NUMBER,
"role": ROLE,
"iat": 1646937553,
"exp": 1646944753,
"tokenExp": 1646944753
}
- Signature: created by signing (encoded header + encoded payload) using the SDK secret through an HMAC SHA256 algorithm.
HMACSHA256(
base64UrlEncode(header) + '.' + base64UrlEncode(payload),
SDK_SECRET
);
Here is our help documentation with those details for your reference 
Generate the SDK JWT
https://marketplace.zoom.us/docs/sdk/native-sdks/auth/#generate-the-sdk-jwt
Let me know if I missing anything. If so, can you share more details regarding your current implementation? This will help provide more context on what needs to be changed. In the meantime, I did some googling and found some helpful resources on generating JWT tokens.