curl --request PATCH \
  --url https://api.balansas.com/functions/v1/customer-api/end-users/{endUserId} \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "firstName": "<string>",
  "middleName": "<string>",
  "lastName": "<string>",
  "email": "[email protected]",
  "dob": "<string>",
  "phone": "<string>",
  "birthCountry": "<string>",
  "nationality": "<string>",
  "ipAddress": "<string>",
  "tags": [
    "<string>"
  ],
  "signupAt": "2023-11-07T05:31:56Z",
  "metadata": {},
  "linkedCryptoWallets": [
    {
      "coin": "<string>",
      "walletAddress": "<string>",
      "relationship": []
    }
  ]
}
'

{
  "data": {
    "id": "9e2b1c34-5d6e-4f70-8a91-2b3c4d5e6f70",
    "fr_end_user_id": "eu_5Lk9Pm",
    "end_user_type": "INDIVIDUAL",
    "first_name": "Maria",
    "middle_name": "Elena",
    "last_name": "Rossi",
    "company_name": "Helix Trading Ltd",
    "email": "[email protected]",
    "status": "pending_verification",
    "fr_owner_business_id": "busi_8Jh2KdLm5Qx",
    "registration_number": "12345678",
    "registration_date": "2019-06-15",
    "business_type": "LIMITED_COMPANY",
    "incorporation_country": "IE",
    "sector": "OTHER_PRODUCTS_SERVICES",
    "risk_tier": "low_risk",
    "verification_completed_at": "2026-05-21T08:00:00.000Z",
    "disclosure_accepted_at": "2026-05-23T10:05:00.000Z",
    "disclosure_version": "ppa-v1.2-2026-05-23",
    "created_at": "2026-05-28T11:02:09.456Z",
    "updated_at": "2026-05-28T11:02:09.456Z"
  }
}