{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e1473c804c227669b37be0feeceeb9126913ba3cc525eb4753cf9fe172721cd",
    "signature": "0xaa2d4bcbce2875e0be6c0cdf74a0ad0f5f3eaa44723e35e95bf165333e4403705a6bc474f5e2c675ba853e07fb92b5ff3b4941d1c71fc1791d659e1b00b3fb6a1c",
    "signer": "0x8ae4454565F44393bB86F738CF13824EeBC18F8d",
    "userId": "398180169"
  }
}