{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x9b8fe9ad77539d906d80508e80e1c743b46db352b7e8118b0ce4d3ebb7a1038e",
    "signature": "0x2fbf3ff59526b4e91812fc2875dc37c60a3b2c81fc84f2edd0e562e18b3c53725a1436ebf75f30a025df9caddf040ff7c60a728b0f1049242ad0adf1f76284cd1c",
    "signer": "0xb8909c41963586dbBe3EbbAB4FC8F1f8E6970Ce2",
    "userId": "435332232"
  }
}