{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "524124418",
    "entityType": "User",
    "nonce": "0xd902c3a65636fcb3ac6b4f807b2bb43b7b8c47361f84c1672889f728278bd1eb",
    "signature": "0x7e4fbdc07fa6a83f5256d52e7b9b1feca9c1da2cd952f86fcf87b2892a5dd8de7c1dc8f23849afe7bf7897656e7931c497f42aa4db612dbe94291e1b67932d881c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}