{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "776994971",
    "entityType": "User",
    "nonce": "0x825a40ebe8489004851e6b695a6f1cc3c464a053f9646bcad846f60b3b44807a",
    "signature": "0xebde970ec1c350b4c82cc127598f20df3068c4ba4bba22f1333f2dc08c160e531b1e72cfd9b6f48a61b9b03c85c832cd59ea6eaa3ec244eac2edb9825f35c0d51b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}