agsaEchoCmd_t
agsaEchoCmd_t payload;
OSSA_WRITE_LE_32(agRoot, &payload, OSSA_OFFSET_OF(agsaEchoCmd_t, tag), pRequest->HTag);
si_memcpy(&payload.payload[0], echoPayload, (sizeof(agsaEchoCmd_t) - 4));
agsaEchoCmd_t payload;