{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "778523",
    "entityType": "User",
    "nonce": "0xd2f0902288df0c4249983fe685fdbfc89a73017cd7b403594ee38c38b34906ab",
    "signature": "0x9b45dcb924c052336751b13b72985228da597a9d8061da6c39404334ebd131d578e23d60da9e6484c62607afeef5c3090474f4445b0ca4f06b421d6a79e3c7f41c",
    "signer": "0x69f11622ae51A55c34462DAfaAa5b4E7e77AB644",
    "userId": "513195827"
  }
}