What is Subgraph Manifest (The Graph)?

A subgraph manifest is a subgraph description that allows subgraphs to autonomously learn what Ethereum data to index, as well as how to index it. Subgraph manifests can help form subgraphs — which after deployment can become a part of the network's global graph of blockchain data. Often, subgraph manifests are part of the digital database (made up of many subgraphs) that defines what specific smart contracts a subgraph indexes, which events from the contracts are important, and how to map event data to entities that a Graph Node stores and generates queries around.