{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "544923401",
    "entityType": "User",
    "nonce": "0x1aa4cc19d9c9486c6dbe42b2baf093fa0561299a88acfd56ff36557f3893d548",
    "signature": "0xe1d88a62f47f3db7e2c9c79f45e5f4043ff36bbb32e3487fb6ed7974dd839897031dee5c50259f3f3f4f84579e8a4f80c2da54ca284513fd77ad4b79b536f27d1b",
    "signer": "0xb0bc7585AC84F169814851A3C22d8d92D133337F",
    "userId": "267657235"
  }
}