{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0x8052fbc0318f8a56ca6f1e0aecbe6f85194de89e80c5fb42fa298084cbd5d87b",
    "signature": "0xb030fd0d58374211a3ba72fd36d2501913765e23b2195ad5e8133acafa37dd0002d5c819adb7421a15c512c916e5e7e5b4411373de24ca761307b966f44293c61c",
    "signer": "0x8c83aB7F6a7f7A93A7CeFeF6E16b212bA43529f5",
    "userId": "549340592"
  }
}