{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4d6c8e226da8209dbae5c110082f33e7255c2ebe8365656f897b8170b543e526",
    "signature": "0x3b3c7cf53ce650b8d9d0269cfc573ff021d55af653739bb26db6b77d855186630d6369f84a93428fa22178f15df29478b4d6efa1be707fb602feff1d344990741c",
    "signer": "0x07c52469beCDB96497D6BC2F5429133d3E432115",
    "userId": "981231831"
  }
}