{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123439",
    "entityType": "User",
    "nonce": "0xbcf7d2776559c81b037c6c0c2837d7a5b5817147758570fb76803e77b6c8518f",
    "signature": "0xcc93a616b9d360abe2ce59fc358bcacfe25a50c3726fd404303b4574a7b8c90608996c601045b555901d96d2705bb1f1166d9addd5ddb1666fe291e8a69f2d001c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}