{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x10341bd15d4948083e63f860f0b76050c5b4ac9257668a0f07250f52bd4af9c4",
    "signature": "0x706d52e1d517d80781693c16943cbac12e03c701fbd760b0119ef319cc49dffc6ea571447d4a26d47473e41845c57389863bedc20da4665e3efe1e456d8639f01b",
    "signer": "0xfBd4DB3bCa5fFBA89e45aBc1dfde8dbD5CceeD0C",
    "userId": "778413362"
  }
}