{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd9171f84f75cc19fdae1bdc71f64cb36f3f8c03f0124c72820d2d6afdb1e7e99",
    "signature": "0xdba536f036980e6c9bc3a7ee2b8605b255999d34fa7270647ab948ac146976a40232d479ff6ad58c7082fa4cf80068de34448408389f0515f49f1fd31f78c14b1c",
    "signer": "0xbb3b8C270080b0DAE42411345FCDc6a00369e247",
    "userId": "690093689"
  }
}