let btc_price_data = 0xc29e4ea7972150a5f3bd6531eba94907ce2be3b47eb17eaee40d381d2fd9122c::feed::get_price_data(b'btc');
 This will retreive
{ "answer": "3461448176253", "answered_in_round": "18446744073709566097", "decimals": 8, "round_id": "18446744073709566097", "started_at": "1698618384", "timestamp": "1698618384" }

Using getAccountResource Aptos API
const NODE_URL = "https://fullnode.testnet.aptoslabs.com";
const client = new AptosClient(NODE_URL);
let res = await client.getAccountResource(
 "0xc29e4ea7972150a5f3bd6531eba94907ce2be3b47eb17eaee40d381d2fd9122c",
 "0xc29e4ea7972150a5f3bd6531eba94907ce2be3b47eb17eaee40d381d2fd9122c::feed::State"
);
return (res as any).data.feed_data.data;