{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaf819385d6fe55b81bea94e6b8882ede479498fbcb23197607fe1aaf7d9d995d",
    "signature": "0x5fbef5478c599510f79dd85d340815aa853d7ecbf658e46b05f2a693c1fd4fbc2385ae3b767e58f25cfa08cd1f80b9333a718d90c86b4d0aee34a7be8e0c36e51c",
    "signer": "0x966447cca409C717A11458aDECa42847FE423AF0",
    "userId": "674042507"
  }
}