{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1640466",
    "entityType": "User",
    "nonce": "0xfa94be2b2acf9b6c94f255f74dccccdc7b3bb17440f2ff5a5538ceb2e1fda5b4",
    "signature": "0xc548442371b5d6a9dad9f47439cb1bb87c5b1e35b5c17d66dd35d28f1df4666a2284a3188c0a3383452ff7f5de1b84752452416f113a6024d4ef191f4c655b5b1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}