{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707863",
    "entityType": "User",
    "nonce": "0x1600adc385977ea1c15ae74801eb34d2e4f8dd1785021c7c6f63de4b56c2ce50",
    "signature": "0x112ebacda370ff0b2c014c463cd5b0fd24afe2e65f333c3ccf6699f0303146c952f09f3ff15712e80487e4341c0039d73e45be7186b5cdde5d455544587c4f971c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}