{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x1a58d6f1c6f8fcb927463ce8229a1a5f8b5c211e5417d625db2302c54dad84a7",
    "signature": "0x316d85becf73f01b737ca111c84813a2c7a703ce9a41ff018e8df64ed72df78878d8217bbc461d8bfb0ab03675b40ff5f6c60677164aa23878dc5342fb9b270a1b",
    "signer": "0x4affB179527ee604CBCCb000A6fB3E5563330F2e",
    "userId": "265097712"
  }
}