{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3bd1545021d8f441599c67c017a769b70e894e4b19405360680b3f59bb83bf93",
    "signature": "0x43648f1c6b4f7de31b62afc0e8a19fc911f46de18fd67b8bfebf2beb9e49655b68658be3fb33bbe8fb7fa147ec8d6ea729d82aa624328e297ab8476c0ffaddd61c",
    "signer": "0x49c8aAC7Db8c12a42FA40DA8bE7bCD299D8BB494",
    "userId": "735195888"
  }
}