Assigns a new big encrypted file (over 10 MB in size), saved in parts using the method upload.saveBigFilePart.
inputEncryptedFileBigUploaded#2dc173c8 id:long parts:int key_fingerprint:int = InputEncryptedFile;
|Random file id, created by the client
|Number of saved parts
|32-bit imprint of the key used to encrypt the file
Saves a part of a large file (over 10 MB in size) to be later passed to one of the methods.