{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154253595",
    "entityType": "User",
    "nonce": "0x667638c0ecac4654990fbfa608476cdfad20502b3c1805408f4d508123a76f52",
    "signature": "0xf84b14f12dd2e79de3c91dcc0fab94e11f064de0ee90125aaa72e6cf73988c7174e8913523c843456f76febdd089c31fe845f0b6dcd0e1f870c33c028dceb9081b",
    "signer": "0xd12A323399559A3773F865c8F21031bc39c29135",
    "userId": "219968466"
  }
}