{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57942",
    "entityType": "User",
    "nonce": "0xf5ee9f7d4063e2465fd64a9b9c95a8569be5638350f89234f93b322adbf205b2",
    "signature": "0x5724723ca35f1f7792475aa665852e36ffa6691c2e90c5c36cb9a07ec708daa343f92953fc60f423eafe6a8adcbbf7f93ec2ec7c587320473aa64ee489c150a81c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}