{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193889654",
    "entityType": "User",
    "nonce": "0x7c5b76d7dd82a1c1cde8dce555f34aa16a0d30b4b152aec04777faef041fcb89",
    "signature": "0x24956bd56b4975c7894ef2fd5a2e13d4db8d3982d054c3624383639a64945b3e5dbb6a5db7e212fabc4378f795fb2e7ababb25bc9753fedcb6fdcf58f24f4f791b",
    "signer": "0xe193cf7Cee171594a10dE7066Dcb521fCa826762",
    "userId": "140827"
  }
}