{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x67887ef8b5d474fc1278e54c7bc0f8d8c991ec7f5d9b2bd94792cfd1c427173e",
    "signature": "0x36b0e68eb10e89b88d5b0505b8f2ff61c913c9558178c3ad44854723756104753c7d7e1a1cf4f31f5a565e5090841043dd15af5f035c2454c9cf227232f23ac41b",
    "signer": "0x4540af43c64C26A8f3f8f77976D584F67C34735E",
    "userId": "823995873"
  }
}