post https://api.symbl.ai/oauth2/token:generate
Generate a JSON Web Token (JWT) using the given credentials. The token is used to authenticate your requests to the Symbl.ai APIs. Tokens expire after 24 hours.
Set type to application and enter the required appId and appSecret from your account at https://platform.symbl.ai/.
If you're new to Symbl.ai, sign up at: https://platform.symbl.ai/#/signup