{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1de7fdcb09086017dd655ed71b9416e13f7fbcd1e82711866b80e39145edef35",
    "signature": "0x270c7857a37909c5115743ed570de1ced4bcb90ee6ef0715aaffd49234fd6f1561c44694633ed4464bc44076e01ae469bfe735cfea8d88ffef927db78f70cb041c",
    "signer": "0x023E459Ac101074015B192d7FA5baB2933984055",
    "userId": "194019211"
  }
}