{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0x7a193bdbb656257293ddbca64b1436f1fb96a6326a712275820bc3a197e24849",
    "signature": "0x55a264be5522d18cdd69c845d559a7b43c86a7c5a5dbf150c62528224a84f28a1bbc14ef648800b5531f41b15d45adcd4872704ae29da74985a9d44701fa3a071c",
    "signer": "0x294F540CE80e30CBc9Fb7bEA94F956ABdEcdEf68",
    "userId": "809640913"
  }
}