{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990836999",
    "entityType": "User",
    "nonce": "0xd23aa45978ba90701cad7757aebd2e8ebf723d8b738fa76e76947416d85df55c",
    "signature": "0x4749315db1db5c839dead56ba4cccd96e950d83ab2fd7cdba4da5675f263f5b942267b3c9615c0881ae131cf37a7155e350c664cc4c7bf3b29577d3196eaf59a1b",
    "signer": "0xd85E4A094e4C057572A9D525C9737051A17ab609",
    "userId": "696716320"
  }
}