{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "25895518",
    "entityType": "User",
    "nonce": "0x8f02e217a6cd6a9ba52f85a780e6c2c94b0b2e6adcea777b21e0bef90515598d",
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    "signer": "0xD30489a3856C937B7dBdf90576d71e90f0F21C20",
    "userId": "447135555"
  }
}