{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18122",
    "entityType": "User",
    "nonce": "0xa3566fdd0012cacf3ecc4fb9078213ef180640e3a18aba242ac006ea86e0d084",
    "signature": "0xfb1cc9215debe5bcb04b3669dac1d74923179320448c91cfb1f71072150bc92a000d538a1024860aaec56375aa12677891da44b87de9f08e1f31b969e146fcdc1b",
    "signer": "0x41E0D919F5E5E950b3646cc2545AB0d2c70af998",
    "userId": "962472503"
  }
}