curl --request POST \
  --url https://api.sandbox.getasset.com/v0/auth/token \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data 'client_id=<string>' \
  --data 'client_secret=The client secret' \
  --data grant_type=client_credentials

{
  "access_token": "<string>",
  "token_type": "Bearer"
}