Updates mutable fields on an existing beneficiary. Only fields present in the request body are changed (partial update). Extra fields not in the schema are rejected with a 400.
ID of the authenticated user making the request. Used for ownership checks and to populate beneficiary_of on creation.
Beneficiary updated
bank, momo ID of the user who owns this beneficiary.
loan_client, payout_recipient ISO 8601 datetime.
ISO 8601 datetime.