{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489165782",
    "entityType": "User",
    "nonce": "0x72983db5e4167738a9385a77632f7a7b0d607fe35d86ecd872d104536be23aa5",
    "signature": "0x3d2f22357a9b3f2454e6b4cf9608669a2fee622e520b14918ea921c73196d203172c439fe443aa644446997ef742109be8edd22c709a51b761563824772f16931c",
    "signer": "0x344Cc6Cd6326A3Fc46e2f789e02111af483Df673",
    "userId": "980331"
  }
}