POWER OF ATTORNEY

        The undersigned hereby constitutes and appoints each of Kathleen C.
Henry, Sara K. Rundell, Michael K. Krebs and Kathleen R. Henry, signing singly,
as the undersigned's true and lawful attorney-in-fact to:

        1.    (1)   execute, for and on behalf of the undersigned, in the
              undersigned's capacity as a beneficial owner, joint actor, or
              similar capacity of securities which are registered under or
              subject to the laws, rules or regulations of any jurisdiction,
              any form, schedule, report or other similar document as may be
              required by such jurisdiction's laws, rules or regulations, and
              any amendments thereto, in accordance with such jurisdiction's
              laws, rules or regulations, including without limitation (a)
              Forms 3, 4 and 5 in accordance with Section 16(a) of the
              Securities Exchange Act of 1934 (the "Exchange Act") and the
              rules thereunder, (b) Schedule 13D or 13G in accordance with
              Section 13(d) of the Exchange Act and the rules thereunder, (c)
              Form 144 under the Securities Act of 1933, and (d) a Uniform
              Application for Access Codes to File on EDGAR on Form ID;

        2.    (2)   do and perform any and all acts for and on behalf of the
              undersigned which may be necessary or desirable to complete and
              execute any such form, schedule, report or other similar
              document, and timely file such form, schedule, report or other
              similar document, including one or more amendments thereto, with
              the United States Securities and Exchange Commission or any other
              appropriate governmental authority or regulatory body of the
              relevant jurisdiction and any stock exchange or similar
              authority; and

        3.    (3)   take any other action of any type whatsoever in connection
              with the foregoing which, in the opinion of such attorney-in-
              fact, may be of benefit to, in the best interest of, or legally
              required by, the undersigned, it being understood that the
              documents executed by such attorney-in-fact on behalf of the
              undersigned pursuant to this Power of Attorney shall be in such
              form and shall contain such terms and conditions as such
              attorney-in-fact may approve in such attorney-in-fact's
              discretion.

        The undersigned hereby grants to each such 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 if personally present, with full power of
substitution or revocation. The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming any of the undersigned's responsibilities to
comply with the securities laws, rules or regulations of any particular
jurisdiction.

        This Power of Attorney revokes any previous powers of Attorney for the
subject matter described above. This Power of Attorney shall remain in full
force and effect until the undersigned is no longer required to file forms,
schedules, or similar documents with respect to the undersigned's holdings of
and transactions in securities which are registered under the laws, rules or
regulations of any jurisdiction, unless earlier revoked by the undersigned in a
signed writing delivered to the foregoing attorneys-in-fact.

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of the date below.


                       Signature:  /s/ Bari Harlam

                       Name:       Bari Harlam

                       Date:       February 14, 2023