{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "30576",
    "entityType": "User",
    "nonce": "0xe908b615b63dce9ee8107cf6373e5cf9ca76b876b51009f2517cb74469992bfd",
    "signature": "0x87177f31d0316511fc08d6429bffdc98ec0d4e51a5c4289717f45e809232de9374de885488d2bcd92a95a4ad71cf7a21a69e620eb7f4dbba0c2f904302f315821c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}