Upload Documento Pessoal

# Upload RG Frente
curl -X POST http://localhost:3000/sub-accounts/document \
  -H "api_key: ak_1234567890abcdef" \
  -H "api_secret: as_1234567890abcdef" \
  -F "documentType=RG_FRONT" \
  -F "file=@rg_frente.jpg"

# Upload Selfie
curl -X POST http://localhost:3000/sub-accounts/document \
  -H "api_key: ak_1234567890abcdef" \
  -H "api_secret: as_1234567890abcdef" \
  -F "documentType=SELFIE" \
  -F "file=@selfie_socio.jpg"

{
  "status": "success",
  "message": "Documento enviado com sucesso.",
  "data": {
    "filename": "rg_frente.jpg",
    "document_type": "RG_FRONT",
    "document_format": "JPG"
  }
}