{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400035644",
    "entityType": "User",
    "nonce": "0x18e6cdac5f9740b86831fa7ec975ffa60aa1aa1be53980992ac5690f98b08300",
    "signature": "0x2b38f6ab1d6c6a9b5cea3f2c2e72c3c2bd675a0bc293a0cfbeca1168690b6578561aaf0ab800f3abc24bb530fc345b096a6dbf5f5efcad7789e5907ef98d1a571b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}