{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x2854b3c011723d9d44976049f2445d34715a2d149614a73b687520787baa1ad7",
    "signature": "0x4c2e80d1275e9d2ed6a831360c8aedb2e4d4daec6a2f6fc05aff1981e1ecee4f675a14cbcd732e041353527829a2395965b8a8f8acf70592231a850f3529080f1c",
    "signer": "0x6479d9720713f53dc89A54A1b2812731e2cF028d",
    "userId": "159329749"
  }
}