{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6a2ac5fd4043c0a37b1b6d829bda7b1754cb0e37c1723967c37b7a50f94b0752",
    "signature": "0x02d6562184f8631ee2df19b47b56dac4b55a6e5308a19f85da99c80be025250c75045b2c4f4c9e4c411790c70cd80cb5862d8f7a3238784d6968705728c29b541c",
    "signer": "0x4f2dc1992AF074e0e00A5C85a6dEcC307aB95e15",
    "userId": "404263867"
  }
}