{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "379648",
    "entityType": "User",
    "nonce": "0xa8f680d48a512e208a34f2dc2e29e3d942937080b8b53421264b149db292e671",
    "signature": "0xd4cc8d967bcc7112096d0a6c360d4a7b7a05bf33fe6b25fcc8393f35bf36a7da5a00df56b7fe09efe59269a4a82781614bbf5b0334d96970db96331fa7002c421c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}