{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393889489",
    "entityType": "User",
    "nonce": "0x9263d7438f95a6d859f1172d19c7b41768bec7f62447a99d35b0cdc7048318d7",
    "signature": "0xfa9846ce393ff5a081298fa4889b3d01df0412db310d87188c8b70ea238a5f820451c6d1cae29adbfd21d216a3ba4ab0d6cb73a14bc41d97c1fb76b8f85df7771b",
    "signer": "0xfC070d9d02c152146e3D1B2cD4B03FD7a3CA1AB0",
    "userId": "539537193"
  }
}