{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839739705",
    "entityType": "User",
    "nonce": "0xb7f0d73d3b633a0cc31e5c7a5b5958432c49d3fbcbe97d9ae21458455f9cbfd1",
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    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}