Update one or more fields of an existing Entity user (Control Person, Beneficial Owner, or Board Member). This is a partial update endpoint - only the fields provided in the request body will be updated.

Important notes:

Platform configuration:

• Your platform must be properly configured before using this endpoint.

PII changes and document requirements:

• When users are updated with new identifying information (such as first_name, last_name, date_of_birth, or citizenship_code), these changes must be accompanied by supporting documentation.
• Use the Submit Documents endpoint with the appropriate document type to provide supporting documents.

Compliance field updates:

• Updating KYC-related fields (sanction_screening, kyc, id_number_type, etc.) may require re-verification depending on your platform configuration.
• Changes to identity documents or verification status may trigger additional compliance checks.

Vendor reliance track:

• For platforms using vendor reliance track, sanction_screening and kyc fields must be provided with vendor verification results.
• sanction_screening_timestamp and kyc_timestamp should be set to the time when the vendor completed the verification (in milliseconds since Unix epoch).

Conditional requirements:

• If id_number_type is non_us_other, the non_us_other_type field is required to describe the ID type.
• For non-US citizens or when tax_id is an ITIN (begins with 9), id_number_type and id_number are required.

Response:
Returns the complete user object with all fields, including unchanged fields and system-generated metadata.