{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x18db3f3862c7aae978f8bd8737c6be84511636e12dcd4853673df5ae9ad41be7",
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    "signer": "0xC0f8D2C092ae50e1512d827eBeb817e1ea4112E0",
    "userId": "451729998"
  }
}