Tenn. Code Ann. § 4-1-109

When an acceptance or cession of jurisdiction as cited in §§ 4-1-106 — 4-1-108 is sought for lands within this state concerning jurisdictional matters over which counties or municipalities, rather than the governor, have authority, agreements made under §§ 4-1-106 — 4-1-108 shall be authenticated by the appropriate representative of the United States and the competent local authority, rather than by the governor, and shall be filed with the secretary of state.