{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "170302",
    "entityType": "User",
    "nonce": "0x3f9911d609fc7cbd5cff5bfe5fb298c8a61d2e5d9a9ca7f047f8f12d413b03be",
    "signature": "0x5e292a7c31e027cb6e2fc9f55428a5745c6001fd5855e583d83090c4efe3d4000e56e417bb37b7ccbfcfceb62b484afec5d6aa0a1ef47f1c5e3efe5f191dd8831b",
    "signer": "0xa48DB3b4393F96ddcF404C400e8e0336767845c2",
    "userId": "360423327"
  }
}