{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x361e7dd331512c450ca26427c117c1904679ed8fcc7301aac3bbf8667e2fb884",
    "signature": "0x81b2ccf6033712c133b9b9e379207d4ed6ae75ba2da5f33f78305aa09dd0edc877c69eee4e5f9834fa4f33411c584ba324959c7ec38bd4b5b1ada6d8006f07891c",
    "signer": "0x8dFCcCaCC1e622346B954eB5F33A4d06d3b66f81",
    "userId": "654384824"
  }
}