{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "657936",
    "entityType": "User",
    "nonce": "0x7553177c3b173d87b0b0ee7847fe3cd4c991fb31bef721370a19f248fa78a780",
    "signature": "0xa7705b9795dedf5cf0ccc2e42ae789de060896f618f6ef8c14dc4bd6957b67ef5d855b72055361d74a909232784fffd78b0b98325104181ccc2126efb0767eda1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}