{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "421774111",
    "entityType": "User",
    "nonce": "0x336dc35e08181ad01402f1a9db4e538ad604ff24fb2615f1fa44f17562fec482",
    "signature": "0x2565e31f3417e9dc09e9b09836865d60795e1eee60e30e0dc9313d135abfcbe639c9d9673915613951772b7dfee647ed58082246cbff648f6d9a7f1230cc6abf1b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}