Okla. Stat. tit. 42, § 42-206: Notice of lien - Contents

The notice of lien shall state the name of the claimant, the

name of the owner, a description of the property upon which the lien

is being claimed, the amount for which the lien is claimed, and the

license number of the real estate broker. The notice of lien shall

recite that the information contained in the notice is true and

accurate to the knowledge of the signators. The notice of lien

shall be signed by the broker or by a person authorized to sign on

behalf of the broker and shall be notarized.