{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1538519",
    "entityType": "User",
    "nonce": "0xebda3e7017cfbfadb035d8c964e49c8b1803adb7f94e8d85104a6cc54b0972ea",
    "signature": "0x35a55d18852e66ebf7ee928383178d629ecb183f7ab4abd458814db95695871a50ccf6a6bf92b3a6dc57ab950cec0ecdb5468325ec69146518a1fae83c9428001c",
    "signer": "0xB8bF557DC997cD9e10AF5CcDddf0D851f201Cd90",
    "userId": "806523887"
  }
}