{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5614801e0227c030023e4a3899e5e030af3924bb9acce1d206900f9de1eae6d9",
    "signature": "0x8843d5413fa60577bad9526d04c4daa20cafa188b078c0fe526367b21abc037e3a3170948f209ec8ebaac7817754312f75fd648da6949dcafba5ffa1238ab9301c",
    "signer": "0x9590a7FC32307801cFD04D758af761B7C95a3Ca8",
    "userId": "840971659"
  }
}