{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0xb4e669afe8b0825ab67494c195fcd713f51d8b6f31119930a829174c4e46f943",
    "signature": "0xf08b869e8e448916766952144f6a6c1971914b303146cfdc8c5467ac773522097e5bd001703c79ce7e7fe0d20f15bed0cffe766f84b7915da51faafe534d7db61b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}