Under such regulations as he shall provide, and with the consent of the individual Indian concerned, unless the Secretary determines such Indian to be incompetent by reason of minority or otherwise, in which case such consent shall not be required, the Secretary may use, advance, expend, exchange, deposit, dispose of, invest and reinvest, in any manner and for any purpose, any money or other property held by the United States in trust for such Indian. The Secretary shall make no determination that an adult Indian is incompetent except after according him an opportunity to be heard upon reasonable notice, in accordance with the provisions of subchapter
II of chapter
5 of title
5. Unless the Indian otherwise agrees, the hearing shall be held in the State of California within sixty days of the date of notice. A person aggrieved by a determination of incompetency made by the Secretary shall be entitled to judicial review of such determination in accordance with sections
701 to
706 of title
5.