curl --request POST \
  --url https://sandbox.layerfi.com/v1/businesses/{businessId}/customers/{customerId}/merge \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "customer_to_archive_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "data": {
    "type": "CustomerData",
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "external_id": "31415926535",
    "individual_name": "<string>",
    "company_name": "<string>",
    "email": "<string>",
    "mobile_phone": "<string>",
    "office_phone": "<string>",
    "address_string": "<string>",
    "memo": "<string>",
    "status": "ACTIVE",
    "transaction_tags": [
      {
        "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "key": "ExampleTagKey",
        "value": "ExampleTagValue",
        "dimension_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "definition_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
        "dimension_display_name": "<string>",
        "value_display_name": "<string>",
        "archived_at": "2023-11-07T05:31:56Z"
      }
    ]
  }
}