{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "209",
    "entityType": "User",
    "nonce": "0x5a4d6f06d73f006631b3f2e22cf003c4816cc95c3b822c79c527716b95f2ee25",
    "signature": "0x3c502a87ec3f4fc556c2e4141456c3346db47fd00485450880f966a04212ea1f7475895037d21e7264122bb84a9f3f1dc9a453f69edb9d388f40a1d8374b1a5f1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}