{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1898740",
    "entityType": "User",
    "nonce": "0x45d5361762b6d30e13bde51cc44168bd7f99ab35d792382aa4c836dcde554e9a",
    "signature": "0x394cde466ce12e88513b6ee6e9d8cc225c63e48cecf492ff829d653472bd3db27e4a3df134aef25789d555811cbc0bf777287bd539c6829da275582a8cc1ee001c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}