{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "662251356",
    "entityType": "User",
    "nonce": "0x0552bcba72c3500b8130c0cbf9e5cea46884fc730997fd062bdaf4d59a998080",
    "signature": "0xbdae7774f3f4894a07db303bececa131120547eb4da673bbd0d105eac4c70c471b0f446449ea719859f02973223fdc6b05fd2c83d7471922e45a66041c87e06a1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}