{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "629135238",
    "entityType": "User",
    "nonce": "0x7b954fce31ec1380ad70af4be0a855897e36f808d151166c7b487bb2b66d8607",
    "signature": "0xfbf67ba16560bd23f910e4d7c9c241d032492794a8bb9741ac3da538a8600da02eb1b00806b4b08a7d1eb6b182dd3a9bcb0a0e33b364fd9c9c3054fd38637d0e1c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}