{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4adbd92ba19c10b3c4dcedd6b8173f5d3b20d2708149c57cc30cd0d151bd54d0",
    "signature": "0xe85eee3e7e383802d20bd8d60679ea127d1e55d2df712b7f1f1f5c578ca5b57d2970722963060619b6ca0b332df0fd463a2769323ce505d8c65635850851b9711b",
    "signer": "0x8DD39E570874D2D88c5e332D55a7B27D3EdeAF0F",
    "userId": "7998133"
  }
}