Get the list of activities from the source
| start | start position |
| num | number of activities |
| source | source of activity |
<activities>
<meta>
<total> { TOTAL COUNT } </total>
</meta>
<activity>
<elapsed> { TIME } </elapsed>
<source> { ACTIVITY TYPE } </source>
<level> { 1 - LOW | 2 - NORMAL | 3 - HIGH } </level>
<id> { ACTIVITY ID } </id>
<message> { ACTIVITY TEXT } </message>
</activity>
</activities>
Requirements: