{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x7fc22d9b3af89ede083dc8b1dc141ca66275f18390f719d10a3e44d83a48d357",
    "signature": "0x7d8e5bf83914e0eed9a9b8eede8c3bb73cf5c8ccf041d39d00b20ebe82a8cb093df6922b41e396140ba1f11d86c415b9d772f4489b6e89c85bce39eed73660421b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}