{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2f0a7849acff289092f838cffabb576896b2e2c97ea2304dc2a7a565e0119e9f",
    "signature": "0x136204885ed322ea2db76640b3f71356b81c1d2fa7b1b7f0f9f2b53b49bd0a2b20cc931c916b4a9332c8b700f92118e45183cdefc1c7d1489f4e4a8172e71ebe1c",
    "signer": "0x71d0bffb1011D6Adc66839Dd71b9e177a5B5dc63",
    "userId": "722673517"
  }
}