{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "706716372",
    "entityType": "User",
    "nonce": "0xa74becb45a7b7fc004b34a848842abc5936f8842bfffc670286bd274ee83416b",
    "signature": "0xb4564f90dc865525c037a20fb1130bacbc902785652e5f196090c120e3f3ab785c2ab307c5582d73220967679067bc1a36f1a05936cdb643c8633cf0495b27281c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}