{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "347139808",
    "entityType": "User",
    "nonce": "0x58d040ff0dfd4f1ad44abe42ce61b1d51c6d32e17eed6210f4ffe999d1d7c8c9",
    "signature": "0x1833e7b1e04da663db96173294465b8e90cc5b8afa75e3c4ee9e80b817ddeac61805c3906dc62951234ae2fa9b6fb5c304d7ce21a55136c047e9d438139d3f461b",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}