curl --request POST \
  --url https://egimgarsud.gimpayapp.com/api/v1/auth/token \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data grant_type=password \
  --data 'client_id=<string>' \
  --data 'client_secret=<string>'

{
  "access_token": "<string>",
  "expires_in": 123,
  "token_type": "<string>",
  "refresh_expires_in": 123,
  "scope": "<string>",
  "not_before_policy": 123
}