{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "578849678",
    "entityType": "User",
    "nonce": "0xb174c029ef6b92f027b1c7b97bcd984872d9ad23948f520470dc227e39db69cc",
    "signature": "0x2460170552d116a0f526fe0c806dfa5a0de03aa8e8bda702e861ca0240585a960ba170579e6a4afdc4da62bd5781bb07641a04cd27dca4cb6e01e5ba12de207c1c",
    "signer": "0x3CE307cb27B2Fc2b03Eae311050CA4e8C34Fa57d",
    "userId": "50936"
  }
}