{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x582f972c4bd9bfe39ec01684055c53d46095e4817fe90a3861be0b8674df7051",
    "signature": "0xf6c0a9758971843a6c80550af14ab8f252744693e7ac165901db85cc4c55c3a23ff405c2d2e012cc38e4a90db15525b422040cf7ca022c7cf84328784f82e3881b",
    "signer": "0xcE1000874CF7A0a7b16c35A55F7D6f10C607A868",
    "userId": "442277469"
  }
}