{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x56cd5183be60b85b9e2928992553367b1f59b6ffd253c9fc4d19cc0356f2a6b0",
    "signature": "0x08582a6d5fc666fd08e4c7e1f16c27f4e41e2268dcd9cb09c79f70cb5b28d28c08a2f932baaef8256832a2c4e3cc1bbb13bf772a4fdd20df722d66b4963ee2b31c",
    "signer": "0x47431aC76Be795c96C6c7f54C60d79EEFe29B5cb",
    "userId": "990845644"
  }
}