post https://{env}.gainsystems.com/api/v1/realms/GAINSystems/protocol/openid-connect/token
Obtain an access token by sending a POST request with grant_type=client_credentials, client_id and client_secret
The returned token is a JWT used as a Bearer token to authenticate GAINS Connect API requests. Note: This endpoint uses different servers. https://auth.gainsapps.com for production and https://auth-dev.gainsapps.com for development for all clients.