{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4ee9bb490c46b8f221f330944ae8aaed8abd25abc4c630453339a18b1ed01843",
    "signature": "0xfb0c165f2217014ae73983782e2239aba1bcf7d1be004484501f0ac01e24eef47f0dea047138d5c2076c047106e9376d279b26b95a57072a2ab24c97488c5c331c",
    "signer": "0xCEE883d0cC7C90bE040Af1f13E5485579E32cb68",
    "userId": "901122144"
  }
}