/oauth/token

Get authorization token using client credentials.
The authorization token is available only for 60 minutes.
After the time has elapsed, a new access token can be generated by entering the key and secret again to generate a new access token.
The Token should be used in the header "Authorization" of each request and value "Bearer ". Optionally a portfolioId can be provided so the token will only be able to access that portfolio and no other.