{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "518283085",
    "entityType": "User",
    "nonce": "0xbfd6d459199327626bfa81281131a9e111f02245923aae569a8b1e42c98ab394",
    "signature": "0xd42cadffeb19de2c351f1291b590b71582c5288d610d70a9e0ffce9b2a4d2180615a8111991556df6924ba2b0cde1cbbe87bca98dcb99dd622817a029cf691fc1b",
    "signer": "0x87efcD88D538e6929D6a41A228B240bd0E225698",
    "userId": "849303995"
  }
}