Gets large data object

Downloads a part of large data.

The data to be downloaded is identified with dataId. offset query paremeter specifies the first byte of the data, and count indicates how many bytes of the data is to be downloaded starting from and including the offset. The default value for offset is zero and the for count it is the total size of the data.

The size of one downloaded data part must be between 1 byte and 10 MB.