{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a48d51953bb1cb1f60f1eccd77a940a16db071623962928ff81e6d30e922d3a",
    "signature": "0xa08cc5cd54050d556ffeb219dfe70c9c96dfde26f0161b9964d937394df877ed7661763dcfad4acf88e529f593f95e51478fd961a921e9c0574f63cea5b3e7821c",
    "signer": "0x64380653367e8F88e5E42a419Efd0927649Aa2b6",
    "userId": "383201892"
  }
}