{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "140",
    "entityType": "User",
    "nonce": "0xe48a1fe19bb2bc592820d3a253f507234384162d16cf1db47ccee324508a2583",
    "signature": "0x2d495708a520f19f907c028b1e9749bb93328dad64ff805e0b80a43c0e6ca4d4381c087286ce913c98a23083c92243442480ea29a626cefab60909ca78c7afb61c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}