{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54801",
    "entityType": "User",
    "nonce": "0x586496b57f5961d86d128ff4b5f6b27b77674c0a4fd77e61486f4bef205ab87f",
    "signature": "0x62e43568eaac4cd5a7f2b1ff928d794a3a50220190b73158294a9b28a81152e2220fe6e00adc83006d3d2a3ccca9c72a1e9c0b2f7c83600dc3917b18782323a11c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}