{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15594",
    "entityType": "User",
    "nonce": "0xafbe3c6b38712daf01499aab4de417d64f207c0b52b630f7b3a6a723f1debcf3",
    "signature": "0x3c430d6519520673f2fd8eb3cff5b133850b5a782caf3b9730b4ffdb9011a14a1cc9d52433937023968b0fe9bde59b9592bea7833325b8e4fb840bddbf24a8611c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}