{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2018225",
    "entityType": "User",
    "nonce": "0x2634cd6aea6d17e3a8135276a1ebb5988eb259087f6e9eb7a8b0e6c6378a8cb9",
    "signature": "0xdcf4c7e3fc34246ceaa75b0ab0cf5194cb539d9d34fea1f57ee4df4c1d609a3d1fbea9b34bb99d13f59729fc44dae5a2c74a4e9d780e3e69d277c35787f5eea51b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}