{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x37dbbfa562ed84bb76f19478538e5335c9456d383103e927b49fc95ff23e276b",
    "signature": "0x253ee2890b76d762a7d4030f2a4feede9231f73605a34d589764e26674b11a590b74a1f7ad08ba3db4db23b7c8957708006d3c2e9202015fa13f32a6168cd87c1c",
    "signer": "0xD2F2E85916598FFb221B3d399A164cD39bd24DD7",
    "userId": "132339661"
  }
}