{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "189474",
    "entityType": "User",
    "nonce": "0x7b610744b3899fdf87aa8173d106d7540d35a6f63c3c617443cfd6634b4ff627",
    "signature": "0x9b7371893a337433da8e4ccf7d9288a8d8b5f09082f69f8552015030d10f05eb4d752bad1a0dcbdc38eb1f3f207d198aa4883a556a0b04a8a457d373cb3c69b01b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}