post https://vibes-rbm-prd.auth.us-west-2.amazoncognito.com/oauth2/token
Get an OAuth 2.0 access token for authenticated API calls 
 The API will respond with a JSON object containing the access token and other relevant information. 
 To make an authenticated API call, include the access token in the authorization header of your API request: 
 Example: Authorization: Bearer [access_token]
