{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x4342345e49c83f01205908a8f83a894d173b9c51f5e6e4e404bf3bc18e5df155",
    "signature": "0x4a20385e414b5cbeb4886482afcf294f847dbd1c596edc67d6024da189d4d02d38c20d5844a512d25b4937cf2d10a9813683d214eac3c2fbaabdba3f2b6545db1c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}