mfa_session_id (UUID from login response) and OTP code. Returns JWT access and refresh tokens on success. Invalid or expired session returns 400 INVALID_SESSION.auth_mfa (gateway).curl --location '/v1/auth/mfa/verify' \
--header 'Content-Type: application/json' \
--data '{
"mfa_session_id": "461e97b2-c859-4b19-98fe-554c7300bc07",
"code": "string"
}'{
"access_token": "string",
"refresh_token": "string",
"expires_in": 0,
"token_type": "Bearer"
}