{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x62257840c41edbdf20dfb32af77eb131e2f097961842aa63c8b5764d203da8b9",
    "signature": "0xabe7b6419ae67c0ac057ba3664555260ecb1fb93b2b2fab24fb8b6e0bd421be7478c789344c976f00f5758fae9d9022404ca7721e034b99933d3e8436465def01c",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}