TokenRequest

{
    "grant_type": "authorization_code",
    "code": "auth_code_abc123",
    "client_id": "yourmarketplace_client_a1b2c3d4",
    "client_secret": "cs_secret_your_secret",
    "redirect_uri": "https://yourmarketplace.com/oauth/callback",
    "code_verifier": "dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk",
    "refresh_token": "opaque_refresh_token"
}