The FID of the reaction's creator
Farcaster ID (FID). A unique identifier assigned to each user in the Farcaster network. This number is permanent and cannot be changed. FIDs are assigned sequentially when users register on the network.
Base64-encoded pagination token for fetching the next page of results. An empty value indicates there are no more pages to return. Used in conjunction with the pageSize parameter to implement pagination across large result sets.
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