{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13989",
    "entityType": "User",
    "nonce": "0xba402d81a04b0426d890f780425d93974e6ff44c82ca364aa632b2ee443df84e",
    "signature": "0xfd7c933d013a19371f25595e878aebf67cada59fed650bcd39054f177b8a679d62a1bb76f2c78293c489d4baec7fd7081e76570e6e90d47e1e22ca06a33da1651b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}