{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1719649",
    "entityType": "User",
    "nonce": "0x240b971e3a474c3b89af83f1abc6d66306adf478a8eb516b016e3dc0fcfb09d3",
    "signature": "0x8c2324c2ac953b9b7e0de51acffae3ae3b328d928555484293023d601ba7c57a0621f3c456f89074378da44cefe2638511eaa15229c671530e94bc1661b4a8901b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}