{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "783705",
    "entityType": "User",
    "nonce": "0x3933d5231b506621568488447a76d37ccf53ed1b2ab9eb9c6f1dcdc05f308d60",
    "signature": "0x34842912353c93009a6b7c166b0237268cfcb74b34490af6d10e9bb2c937a8df17ffcfc4c6fc760ae580a36bcc0a49a58777dddbe146938b9e2de2a6f88931291c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}