Exhibit 4.52



Memorandum
of Understanding



THIS MEMORANDUM OF UNDERSTANDING(this
“Agreement”) is dated effective as of February 27, 2019 (the “Effective Date”).



BETWEEN:



EHAVE, INC.,

a corporation formed under the laws of the Province
of Ontario

(“Ehave”);



- and –



PRATEEK DWIVEDI,

an individual residing in the Province of Ontario

(the “Executive”);



(collectively, the “Parties”)



RECITALS:



| | 1. | Ehave and the Executive entered into an executive employment agreement pursuant to which Ehave
engaged the Executive in the position of Chief Executive Officer (the “Employment Agreement”).
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 2. | Ehave intends to enter into an asset purchase agreement with ZYUS Life Sciences Inc. (“Zyus”)
(the “Asset Purchase Agreement”), pursuant to which, among other things, Ehave will sell a substantial portion
of its assets to Zyus (the “Asset Sale”).
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | Ehave anticipates having insufficient funds, in the near future, with which to pay the Executive’s
annual salary under the Employment Agreement.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------



| | 4. | Section 3.09 of the Employment Agreement provides that, upon the occurrence of a Resignation for
Good Reason (as defined in the Employment Agreement), which, pursuant to Section 3.10(iii) of the Employment Agreement, includes
a material reduction in compensation, the Executive is entitled to payment in lieu of notice pursuant to Section 3.04 thereof,
and to a discretionary bonus pursuant to Section 3.06 thereof (the “Severance Payments”).
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | Section 2.03 of the Employment Agreement provides that, among other things, Ehave shall grant the
Executive an Adjustment Equity Award (as defined in the Employment Agreement) sufficient to maintain the Executive’s 5% share
of Ehave’s issued and outstanding common shares, which adjustment equity award is still required to be paid upon a Resignation
for Good Reason (the “Equity Adjustment Award”).
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 6. | Ehave and the Executive desire to memorialize the terms under which the Executive will release
Ehave from the obligation to pay the Severance Payments and the Equity Adjustment Award.
| | -- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



NOW THEREFORE, in consideration
of the premises and the mutual agreements herein, and of other consideration (the receipt and sufficiency of which are acknowledged
by each Party), the Parties agree as follows:











| | 1. | RECITALS
| | -- | --------



The foregoing recitals are incorporated
into this Agreement as if separately restated herein.



| | 2. | SEVERANCE TERMS
| | -- | ---------------



| | (a) | Upon the Effective Date, Ehave shall
| | --- | ------------------------------------



| | (i) | issue 253,654,987 common shares in the capital of Ehave to the Executive (the “Consideration
Shares”), which will constitute 10% of the issued and outstanding common shares in the capital of Ehave; and
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | not have outstanding any debt or other securities that give any rights of anti-dilution or similar
adjustments to the holders thereof.
| | ---- | --------------------------------------------------------------------------------------------------------------------------------------



| | (b) | Upon the Effective Date, the Executive shall:
| | --- | ---------------------------------------------



| | (i) | release any and all rights he may have with respect to any and all stock options or other awards
that have been granted to him by Ehave, including, without limitation, by cancelling the 7,327,376 options of Ehave that are held
by the Executive; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | release Ehave from any and all rights he may have under the Employment Agreement pursuant solely
to Sections 2.03, 3.04, 3.05, 3.06, 3.09 and 3.10, but, for greater certainty, without derogating from the Executive’s other
rights under the Employment Agreement, including, without limitation, Sections 2.01, 2.04, 2.05 and 2.06.
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | If the Asset Sale has closed, pay to the Executive from the proceeds thereof, the remainder of his bonus for the year ended
December 31, 2017, being $97,500, less applicable withholdings and deductions.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | AMENDMENTS TO EMPLOYMENT AGREEMENT
| | -- | ----------------------------------



| | (a) | Section 3.04 of the Employment Agreement is hereby deleted in its entirety, and replaced and restated
as follows:
| | --- | -----------------------------------------------------------------------------------------------------------------



3.04 Termination without
Cause. The Company may terminate this Agreement without cause at any time, by providing the Executive with the minimum notice
of termination (or pay in lieu of notice), benefits and, severance pay (if any) to which the Executive is entitled under the Employment
Standards Act, 2000 or any amended or replacement legislation, plus any other additional minimum entitlements to which the
Executive is entitled thereunder at such time, and the provision of such notice or pay in lieu of notice, severance pay (if any),
and any additional minimum entitlements (if any), shall constitute full and final satisfaction of all rights or entitlements which
the Executive may have arising from or related to the termination of the Executive’s employment (including notice, pay in
lieu of notice, severance pay, etc.), whether pursuant to contract, common law, statute or otherwise.



Notwithstanding the foregoing,
in addition to the notice and/or pay in lieu of notice described in this Article 3.04, the Company will provide the Executive with
benefit continuation for the period required pursuant to the Employment Standards Act, 2000.



The Executive specifically agrees
that the notice provided by this Article 3.04 is reasonable and that by entering into this Agreement, the Executive is waiving
and giving up any right to any further or additional notice, pay in lieu of notice or severance pay, except as required by the
Employment Standards Act, 2000. The Company shall also pay the Executive’s final wages to the date of termination
of employment as well as any accrued and unpaid vacation pay owing to the Executive. Notwithstanding anything else in this Agreement,
the Company guarantees that the Executive shall receive his minimum entitlements under the Employment Standards Act, 2000
upon the termination of his employment.











| | (b) | Section 2.03, Section 3.05, Section 3.06, Section 3.09 and Section 3.10 of the Employment Agreement are hereby deleted in their
entirety.
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------



| | (c) | Section 3.08 of the Employment Agreement is hereby deleted in its entirety, and replaced and restated as follows:
| | --- | -----------------------------------------------------------------------------------------------------------------



3.08 Resignation by Executive.
The Executive shall be entitled to terminate this Agreement and his employment with the Company, at any time and for whatever reason.
The Company shall be entitled, in its sole discretion, to accept such resignation effective immediately, following which, the Company
shall have no other obligations to the Executive other than as expressly provided for in this Agreement.



| | 4. | REPRESENTATIONS AND WARRANTIES
| | -- | ------------------------------



The Executive represents,
warrants and acknowledges, to Ehave as follows, and acknowledges that Ehave is relying upon these representations, warranties and
acknowledgments in connection with the purchase of the Consideration Shares:



| | (a) | the Executive has properly completed, executed the applicable Exhibits attached hereto, and the
information contained therein is true and correct;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------



| | (b) | if the Executive is acting as agent for a principal (a “Disclosed Beneficial Purchaser”),
(i) the Executive is duly and validly authorized to enter into this agreement and all other necessary documentation on behalf of
such Disclosed Beneficial Purchaser and (ii) this Agreement has been duly and validly authorized, executed and delivered on behalf
of, and constitutes a valid and legally binding obligation of such Disclosed Beneficial Purchaser, enforceable in accordance with
its terms, subject to customary limitations with respect to bankruptcy, insolvency or other laws affecting creditors' rights generally
and to the availability of equitable remedies;
| | --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (c) | the Executive (or, if applicable, the Disclosed Beneficial Purchaser) is an “accredited investor”
as defined under applicable Canadian securities laws and has certified its eligibility to purchase pursuant to such exemption by
completing Exhibit “B”;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (d) | if the Executive is relying on paragraphs (j), (k) or (l) of the definition of “accredited
investor”, the Executive has also completed, signed and delivered a Form for Individual Accredited Investors in the form
attached as Exhibit “C” and in so doing, the Executive represents and acknowledges that Sections 1, 5 and 6 of such
form were completed, as applicable, before the Executive completed and signed such form;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (e) | the Executive is purchasing the Consideration Shares as principal for its own account, not for
the benefit of any other person, for investment only and not with a view to resale in the course of or incidental to a distribution
of all or any of the Consideration Shares;
| | --- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (f) | the Executive acknowledges and confirms that any certificates representing the Consideration Shares
will carry the legend stating substantially the following, as may be revised by Ehave to comply with applicable securities laws:
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



UNLESS PERMITTED
UNDER SECURITIES LEGISLATION, THE HOLDER OF THIS SECURITY MUST NOT TRADE THE SECURITY BEFORE THE DATE THAT IS 4 MONTHS AND A DAY
AFTER THE LATER OF (I) FEBRUARY 27, 2019, AND (II) THE DATE THE ISSUER BECAME A REPORTING ISSUER IN ANY PROVINCE OR TERRITORY.











| | (g) | the Executive will provide such additional information and documents as may be requested in order
for Ehave to determine whether the Executive or the Disclosed Beneficial Purchaser, as applicable, satisfies the indicated category
of accredited investor, including in particular those based on income or assets; and
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (h) | the Executive acknowledges and agrees that: (a) Ehave is required to disclose to the applicable
securities regulatory authorities or regulators (the “Securities Authorities”) certain information pertaining
to the Executive, including the Executive's name, residential address, telephone number, number of Consideration Shares purchased,
purchase price therefor, statutory exemption relied on and date of distribution (collectively “personal information”),
that is required to be disclosed in Schedule I of Form 45-106F1 under Canadian Securities Administrators' National Instrument 45-106
– Prospectus Exemptions (“NI 45-106”), which Form 45-106F1 is required to be filed by Ehave under
NI 45-106; (b) the personal information will be delivered to the applicable Securities Authorities under the authority granted
in applicable securities legislation; (c) such personal information is being collected indirectly by the applicable Securities
Authorities under the authority granted to it in securities legislation; (d) such personal information is being collected for the
purposes of the administration and enforcement of the securities legislation of the local jurisdiction; and (e) the title, business
address and business telephone number of the public official in the local jurisdiction who can answer questions about the Securities
Authority's indirect collection of such personal information is indicated in Exhibit “D” hereto. By executing this
Agreement, the Executive hereby authorizes the indirect collection of such personal information by the applicable Securities Authorities.
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 5. | Miscellaneous
| | -- | -------------



| | a) | This Agreement and each of the documents contemplated by or delivered under or in connection with
this Agreement are governed by and are to be construed in accordance with the laws of the Province of Ontario and the laws of Canada
applicable therein and treated in all respects as an Ontario contract. The Parties hereby irrevocably and unconditionally attorn
to the exclusive jurisdiction of the courts of the Province of Ontario and all courts competent to hear appeals therefrom.
| | -- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | b) | This Agreement shall be binding upon and enure solely to the benefit of the Parties and their respective
heirs, executors, personal legal representatives, successors and permitted assigns
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | c) | If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced
by any law or public policy, all other terms and provisions of this Agreement shall nevertheless remain in full force and effect
so long as the economic or legal substance of the transactions contemplated hereby is not affected in any manner materially adverse
to a Party. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the Parties
shall negotiate in good faith to modify this Agreement so as to effect the original intent of the Parties as closely as possible.
| | -- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | d) | This Agreement constitutes the entire agreement of the Parties with respect to the subject matter
hereof and supersedes all prior agreements and undertakings, both written and oral, between the Parties with respect to the subject
matter hereof.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | e) | This Agreement may not be assigned by any Party.
| | -- | ------------------------------------------------



| | f) | This Agreement may be executed in one or more counterparts, each of which when executed shall be
deemed to be an original but all of which taken together shall constitute one and the same agreement.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | g) | The Executive acknowledges that Ehave has advised the Executive to obtain independent legal advice
with respect to the entry into this Agreement and confirms that he/she has either done so or has knowingly waived his/her right
to do so. The Executive further acknowledges that this Agreement has been entered into by him/her freely and voluntarily and without
duress. Ehave shall reimburse the Executive for any independent legal advice obtained, up to a maximum of $3,000 plus applicable
HST.
| | -- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



[signature page follows]











IN WITNESS WHEREOF the Parties have
executed this Agreement as of the date first written above.



EHAVE, INC.



|Per: | /s/ Binyomin Posen         |  | /s/ Prateek Dwivedi
|---- | -------------------------- |  | -------------------
|     | Authorized Signing Officer |  | Prateek Dwivedi