{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ff4c52b3f38f6ff6dd2444d41a6957ec8de93d08e41e6d0a52013c9627ad6d4",
    "signature": "0x0a58b262fa9b34d901eadc8a36488e926f822630f565c61ef826d5722d86610568e39be1f674b46db25510ff3a1522eb8a96ee60a1d3871ad863f5cab87957371b",
    "signer": "0xADF54C2e8AeE384a9540e524eDCAd6621F64612D",
    "userId": "518758857"
  }
}