{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "784290",
    "entityType": "User",
    "nonce": "0xe637bd3398fd9d11a366a27ad1adcc61b9287212eab68f92fc1f30bdf62101db",
    "signature": "0x9e735c8d11abd17bec5ed344bb4c302118a891cf1270f1d5cf09bf8b14e361f12d075d1ce3da87370dc96799b2e489b7dd023dd793eacd5442716fcaef0bd6781c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}