{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "694752224",
    "entityType": "User",
    "nonce": "0x329ce0a6d645d48c330afa446a1f2292626d4349ca48b9d71a636d76e9985384",
    "signature": "0xa7a41db52ed3a1aa9b927f7fcf16fe8765b5ca4bf4d2f0c57c93aea02d7dbc97434c0bab46a79694daf5487e0f5674886f56a1f863bd8cec581cd4759eb1f7271c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}