{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "872905959",
    "entityType": "User",
    "nonce": "0xb7d65b34fdc1345b4ae925314146f6dcfbb776a2817559af204a2539c87ef58d",
    "signature": "0x505b94bce49a00037b2af9178764c52125d5ff46d51148ae93eda2236aec1c3f7a47aa55accd992f283e82db188c18b181a5b220294340a040a8ea1dec5283f51b",
    "signer": "0xa6030211678990225Ac0a6a2862549d825e7A039",
    "userId": "543439291"
  }
}