POWER OF ATTORNEY

KNOW ALL BY THESE PRESENTS, that the undersigned hereby
authorizes Eric Powers, Stacie S. Aarestad and Ryan M. Rourke Reed, each acting
singly, to execute and caused to be filed with the United States Securities
and Exchange Commission any and all documents or filings, including any
amendments thereto, required to be so filed. The undersigned hereby grants to
the attorney-in-fact full power and authority to do and perform any and every
act and thing whatsoever requisite, necessary or proper to be done in the
exercise of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do personally present,
with full power of substitution, resubstitution or revocation, hereby ratifying
and confirming all that such attorney-in-fact, or such attorney's-in-fact
substitute or substitutes, shall lawfully do or cause to be done by virtue of
this power of attorney and the rights and powers herein granted. The
undersigned acknowledges that the foregoing attorney-in-fact, in serving in
such capacity at the request of the undersigned, is not assuming any of the
undersigned's responsibilities to comply with all applicable laws, including
Sections 13 and 16 of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and effect until revoked by
the undersigned in a signed writing delivered to the foregoing attorney-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 27th day of December, 2021.

 /s/ Steven M. White
Name: Steven M. White