{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "204399",
    "entityType": "User",
    "nonce": "0x9b9a7ca30fa78e2ed28cf8fd429571464c305b3780c87a8a7176a76d288ba8c7",
    "signature": "0x2b123fb61a6dc0a4fc1b8bbeeb2ba192d30e2618003a8f41a16f8f46a04ec6c2421be2ba3f5206443a2390eb5d5d46cca492ccb0817c3dfe0ed677179189652e1b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}