{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306102391",
    "entityType": "User",
    "nonce": "0xf52cd4b67b48037cf568f45ca7ba1ab8a69f009eaf3cd71c1183d56014211a51",
    "signature": "0x1f38d995a6e6eee09761e009721ab8ce34aebfa93f99620a501f515a219e9a8519fba163dbf930422d9b618fc3ccce25c89e5200a12aa3d3d3b0a3f73d837d551c",
    "signer": "0xF5C198A035503518a579b15Fb9eE834F3b4b1bAB",
    "userId": "765691673"
  }
}