{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120199991",
    "entityType": "User",
    "nonce": "0xcaa61a217016b0f68107a82001b5813d587d33f4fd9da8a34217780ef8ed9a3b",
    "signature": "0x991df72a16adfc178f347701468aef0bf71da740c843ca7673d18ec9f9ffedac4df1e6eae8f87b9ef65bfe88123eab1c99d78d48299c3b8021dcb8378fa6d89d1c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}