{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1948721",
    "entityType": "User",
    "nonce": "0x3667f28fab26b43d3f7b06cd55d32b9bb20a78a9b6975d6f48c8b03c30ecd6e0",
    "signature": "0x3ca91c0935655d8080b9df64ea7b1d8c1daad06ad4e32de39d29775180847c1e149e9f09e514b5bca7001993960adc682c0e51f48e81af3448f3a68117f831581c",
    "signer": "0xa22176a11BF6703EFe39D488aA7cC06aa781C44A",
    "userId": "633924738"
  }
}