{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "322803",
    "entityType": "User",
    "nonce": "0x387966244e7129ea849b6dee6293da291dc7ef9db9b021a334a0f48f756b5008",
    "signature": "0xfe07cf8e4ae6bdc666851706dc20c8999d8f8d6b8dbee1678122e7ab1db0f77d50533d5177283f4b43350f8cc08f5480e476c984f059f319e0673c2ab2f1191e1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}