curl -X GET "https://api.cryptomate.me/management/clients/client_a1b2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d/pending-documents" \
  -H "x-api-key: $CRYPTOMATE_API_KEY"

{
  "documents": [
    {
      "provider": "BRIDGE",
      "type": "PASSPORT",
      "name": "Passport",
      "description": "A valid government-issued passport",
      "require_image": true,
      "require_back_image": false,
      "require_number": true,
      "require_expiration": true,
      "issue_reasons": ["image_unclear"]
    }
  ]
}

{
  "code": "NOT_FOUND",
  "message": "Client not found: client_a1b2c3d4-e5f6-4a7b-8c9d-0e1f2a3b4c5d"
}

{
  "code": "VAL",
  "message": "No pending documents for client, due to status: ACTIVE"
}