{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0x0702d3449d3e71bc0a4823b06222c7a54c06fc367f5da077aba398e3f7a521e0",
    "signature": "0xd78893a4b311c897258d26c14fb96dfccf2b35ca972ed4e42e523163cb492dcc70a3c82401fb8f6bb42ca8bf265d62145c3be86eb4366049b058d16d90a4caa71c",
    "signer": "0x4899A9FD44D39FfcA2fbB5bBB3476f1d0748126D",
    "userId": "939721941"
  }
}