{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "173621099",
    "entityType": "User",
    "nonce": "0x592f84e175106a56a994510ce91861dd339dffa660ca6b941ef3ab730c62a698",
    "signature": "0x98d5e972d08f4a4727936aa76a083163b9ce4f7307439fb89d269fcd33256ae45d98c604e88426d0ae70ef52ba4482032ad2d43363aaae1489e13d83406b88071b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}