Fetch a list of on-chain events provided by an FID

curl --request GET \
  --url https://hub-api.neynar.com/v1/onChainEventsByFid \
  --header 'x-api-key: <api-key>'

{
  "events": [
    {
      "type": "EVENT_TYPE_SIGNER",
      "chainId": 123,
      "blockNumber": 123,
      "blockHash": "0x75fbbb8b2a4ede67ac350e1b0503c6a152c0091bd8e3ef4a6927d58e088eae28",
      "blockTimestamp": 123,
      "transactionHash": "0x36ef79e6c460e6ae251908be13116ff0065960adb1ae032b4cc65a8352f28952",
      "logIndex": 123,
      "txIndex": 123,
      "fid": 123,
      "signerEventBody": {
        "key": "<string>",
        "keyType": 123,
        "eventType": "SIGNER_EVENT_TYPE_ADD",
        "metadata": "aSDinaTvuI8gbWludGxpZnk=",
        "metadataType": 123
      }
    }
  ]
}