Retrieves a key by its ID.
{
"id": "key-6ece3-9l565-xxxxxxxxxxxxxxxx",
"scheme": "ECDSA",
"curve": "secp256k1",
"publicKey": "02660461d66a637ea2d2ee3565669ad794f51ca3e0812ff03a0fe4820a19754839",
"status": "Active",
"custodial": true,
"dateCreated": "2025-03-26T20:25:52.909Z"
}