{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "815248718",
    "entityType": "User",
    "nonce": "0x7837b4d88a343adcd4e617486b07bdce95ab93edb095d5d1838f940b493791c7",
    "signature": "0xe651625f68d1f13c69837bc688fb919ca9d42d28ef6436892ae63163bec960841e8443603561d6873f87aff469cbb9ec742d4a37fc138ee08d59bbd4b1f81de31b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}