{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54545",
    "entityType": "User",
    "nonce": "0x1afb9c9e821a80e767f0a6eee2f7fa60f2ff2ae1be933d7572d48b8f808b4564",
    "signature": "0xe9869b70b857517fdae597e1a112c32d7b799e9a613879b3b9080d62caa2d7c4171d9bef043cb4f87eff85884936455965f33745c0a4a42e1c50e9c4bdf383e61b",
    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
    "userId": "849776474"
  }
}