{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843258957",
    "entityType": "User",
    "nonce": "0x7bc562c5b0cf3b1fda2a61a5e39952b21aba944265a7e39fa360ac64b2f751a1",
    "signature": "0xc3eecffe730ca34fdcaf58bf568b935aa8669ea85535a3d087746b1535d78a4c5608d9eed032fe7b95ac412db376f964a1d6faf0504ff6bc3e360d41e41d08b21b",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}