curl --request POST \
  --url https://api-prod.blaaiz.com/api/external/customer/{id}/files \
  --header 'Content-Type: application/json' \
  --header 'x-blaaiz-api-key: <api-key>' \
  --data '
{
  "id_file": "file_123456",
  "proof_of_address_file": "file_789012",
  "liveness_check_file": "file_345678"
}
'

{
  "message": "Customer files uploaded successfully"
}