{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51978829",
    "entityType": "User",
    "nonce": "0xc81ad052d81d9817b398d4898999df1f73ac4a183e74bfa9d6fb0d6e08e960b4",
    "signature": "0x041c9209d633dc015cc933a594d1210a8bc26a687e3058cf3f62917f48e37a783ef466f72fbae04f3f0adb562c25cbda78918a225f7a7a54494544284621a9421b",
    "signer": "0x3EFFF4df817177c0A8370597a286FB16Cd1DDd9E",
    "userId": "688850395"
  }
}