WebAPI hitting payload limit

Hi,

I have a WebAPI retrieving data from the Appian Database, which is hitting the 1GB payload limit. This means I need to retrieve my data in chunks (multiple calls).

local!entities: a!queryEntity(
entity: cons!ABD_INITIATIVE_ENTITY_CONS,
query: a!query(
filter: a!queryFilter(
field: "lastUpdated",
operator: "=",
value: todate(http!request.queryParameters.lastUpdated)
),
pagingInfo: a!pagingInfo(
startIndex: 1,
batchSize: 50
)
),
fetchTotalCount: true
).data

This query retrieves the majority of the data but not all. How can I tell which data has not been retrieved and needs a separate call?

Thanks.