Poll Warpcast Signer

curl --request POST \
  --url https://api.pinata.cloud/v3/farcaster/poll_warpcast_signer \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "result": {
      "signedKeyRequest": {
        "token": "0xe2a4f68bea6c78ea5980e3b9",
        "deeplinkUrl": "farcaster://signed-key-request?token=0xe2a4f68bea6c78ea5980e3b9",
        "key": "0xe57c09c48b03a27d65679309456138ad1401d3cd278cb354b73eb819aa117f2f",
        "requestFid": 6023,
        "state": "completed",
        "isSponsored": false,
        "userFid": 6023
      }
    }
  }
}