{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "399822794",
    "entityType": "User",
    "nonce": "0x6f209d09cbe4b925234921c3655576b16186bc34ccd471b54acecfd16eed5a2a",
    "signature": "0xbc8e93caefccecad6e31ae0475e43a7a98af9150495dfc39e273c6c627c0141d2e7c3ca9e0a75bb351095751474da7aa811337281feb45f684f62ed8b394fff21c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}