{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21061",
    "entityType": "User",
    "nonce": "0x2f62fac6c9de6a3e6657731aa3391d9c7fa1296fa1777bab0d2e49a303a3e439",
    "signature": "0xb42e9f0ea57a1fb9bfc92571f5098a7e7135ec81a6619e46168dbe82201eee561044dbd18b367ef6c0157cd7791233010c2b59edd654289c0e3d296a25768efe1c",
    "signer": "0x63F42e188A02FCf343E83cc1e7AA03510b9f57e2",
    "userId": "622454271"
  }
}