{
  "request": {
    "method": "POST",
    "url": "https://idp.int.identitysandbox.gov/api/openid_connect/token",
    "headers": {
      "Content-Type": "application/x-www-form-urlencoded"
    },
    "form": {
      "grant_type": "authorization_code",
      "code": "abc123def456ghi789",
      "client_assertion_type": "urn:ietf:params:oauth:client-assertion-type:jwt-bearer",
      "client_assertion": "<signed JWT RS256>"
    }
  },
  "response": {
    "access_token": "9e6b1a2f-3c4d-4e5a-9d8c-7b6a5f4e3d2c",
    "token_type": "Bearer",
    "expires_in": 3600,
    "id_token": "eyJhbGciOiJSUzI1NiIsImtpZCI6IjIwMjYta2V5LTAxIn0..."
  }
}