{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1713713",
    "entityType": "User",
    "nonce": "0x2beeb45ec8ef30a4bd3ae76707e47d0b6afe60867b053cd4fb0ec262d5ea55a5",
    "signature": "0xac0448e2d85a52952c72dfb8dd9f58bc756bc4cb01d2a1b5c8b77b14784f3a202103e3b5b82e88bdcc82e3994fd9af140117920b56981dc6ed3abd13f40a4d0e1b",
    "signer": "0x57B72EB07de2F234F10e779f1Ba99344cEa3B3A6",
    "userId": "873528115"
  }
}