[keycloak-user] Extract user roles from jwt auth token

[Irtiza Ali]

I am using this endpoint:

XXXXXXXXXX/protocol/openid-connect/token

to authenticate the user. Once the user is authenticated a json(jwt) is
returned from keyclock.

Decoded jwt json:

{
  "jti": "30d233b2-bba8-4f21-bc51-8c867cd5db8b",
  "exp": 1532326409,
  "nbf": 0,
  "iat": 1532325509,
  "iss": "http://localhost:8080/auth/realms/nodejs-example",
  "aud": "nodejs-connect",
  "sub": "faf3fc64-b96b-4e3f-8e86-4fc727e20d31",
  "typ": "Bearer",
  "azp": "nodejs-connect",
  "auth_time": 0,
  "session_state": "736f9570-a3c8-4180-927e-15b5e0f63764",
  "acr": "1",
  "allowed-origins": [],
  "resource_access": {
    "account": {
      "roles": [
        "view-profile"
      ]
    }
  },
  "name": "aaa bbb",
  "preferred_username": "ali123",
  "given_name": "aaa",
  "family_name": "bbb",
  "email": "a123 at yahoo.com"
}

How can I retrieve the user roles from that JWT token?

Thank you

Irtiza Ali