{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ffec2d5003a01a524171b91ba1cb5ef713654d96f9f4b35376ea2fd5db8555a",
    "signature": "0xe51444f57bd857b626d04a9d33441a8b2fbeef334e7edee930e84beb86f35ef7703869a5dace5d8ce408bd5c23c4941559682ace3a2598cb188e4c07fd9f55f21c",
    "signer": "0x661463553B156580E748121e1aCAE86219E6E996",
    "userId": "247699513"
  }
}