curl --request PUT \
  --url https://api.ledger.so/v1/disputes/{disputeId}/evidence \
  --header 'Api-Key: <api-key>' \
  --header 'Content-Type: multipart/form-data' \
  --form 'name=<string>' \
  --form 'type=<string>' \
  --form evidence='@example-file'

{
  "error": {
    "type": "validation_error",
    "code": "invalid_request_body",
    "message": "Invalid request body"
  },
  "request_id": "req_abc123"
}