Does a notice of intention to move for a new trial need to be signed by an attorney of record?

We do not question the general rule that notice of some action sought to be taken in a judicial proceeding such as notices of motion, notices of intention to move for new trial, notices of appeal and similar notices must be signed by the attorney of record for the party giving such notice. However, a notice, the purpose of which is to convey information of some action already taken by the court, appears to be of a different character, and we see no inherent reason why such a notice must be signed by an attorney. 'The term 'notice' of itself imports that the information given thereby comes from an authentic source, and is to be directed to some one who is to act or refrain from acting in consequence of the information contained in the notice' (Williams v. Bergin, 108 Cal. 166, 171, 41 P. 287, 288). We conclude that

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