{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51398",
    "entityType": "User",
    "nonce": "0xc874a5c0539f3ea4dfc35031986af38fe275cba779ed706e50d20eab06013109",
    "signature": "0xe22e6d14a1637b47cfc764e33ef69a38eb6996c30cf894196561e1884c4eaeb215299c0c1bd3e3c3f8de85a19784816a996b49823e6ec3711fce5ee68aabaa241b",
    "signer": "0x69D7699156fe9a786da8cc3ee979eaa512E6BA81",
    "userId": "6137592"
  }
}