{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd1e6bf92db39693c162cb3c78efd6481c269399ac95b82e2cbc6b25c930a4ecc",
    "signature": "0xa518cf1d3b1d28d6ed7a3a4d6e21c6b3d7bb0bf3fd343f1cc7e3854f57ba64da6562fe8858dafe325f8f78eb53d23e66fc48ea7388560ae5d6f75a6f70cae7381b",
    "signer": "0xCdFab7D841D80a29A82E77DDb44327B7Ec8C3081",
    "userId": "445246220"
  }
}