{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0x5ce9dd8c09df6fde1c11dec94ddbbd2225fc1408dc31bac5ccab643bc30510b8",
    "signature": "0x824114383fb35d3e7d9198145984e63c500d96efdefb260190c09625a1f924b62546ec83a60f3361deceb438abd121c6b4bd0ba12ea2e67e3f6ddfbe5395f0631c",
    "signer": "0x81Bf0645011274410d5E45790ff7D2d89f3e2254",
    "userId": "880775312"
  }
}