{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240783916",
    "entityType": "User",
    "nonce": "0xc720917d756ed605b461147e4c01c5c5fac48b5b8f306c0732b90ffde8c0032d",
    "signature": "0x452f74cbfd903e33c4ebf8049cbfe5708bf0d3c00e4a394d2ff5fb57483cea3a67d503ec506e8d5a687cfbecaaa650d8e1bd623f1d57f83712a9d3331447175b1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}