{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57849",
    "entityType": "User",
    "nonce": "0x33a35cdbbd7a88c7c2b5fbba5e946561e39913eede0536afe3ef56d25323c5d4",
    "signature": "0x09504df06815366f6c77621ce8b6034b9c3c05e8838063f0e598acb29e5294dc0cc8546ecdcb4223af91ac0000e3f922d5d603a686e2dc743620dbea6cbeb8871b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}