{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319458",
    "entityType": "User",
    "nonce": "0x23b08bdafd7f700fa0f486b421a13354365c51c3580c69ef67b75da50a83549e",
    "signature": "0xfcbd63165b03df08197c5a760ec2db55b48e3de737bc68b93dd7c3a835595e9426f4f5d5419bf512c76f65553b4cf63936007e564d35025f98c0cdc0a2658d771c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}