{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0xe2490b204edd6fc3b6ba74c7cec230bd4d14b130d4e721e4a44a824c29c77497",
    "signature": "0x15d4b429969e8d40c5cc86f740aec80b667c456cf7781a0e29ee8283911abaa265501cd8296d7bd7956f7d8c562713801197347841cf4258cee44a298e9c2a0f1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}