{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xd235b89538619bb62f4dc413e9ef291985cc76df98418c6dab72674384181134",
    "signature": "0xf4315ff7564ba950bf656924132399f0232b35cbc343891cf553c2004e410afe1451072a9bbf7d6aa98f18d5bc72894458d7643a47f5b2ec98dd2ff2aa83f6b11b",
    "signer": "0x9389EeeadB96012E95139B302a0B50BF7fD75D55",
    "userId": "421654712"
  }
}