{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "718818006",
    "entityType": "User",
    "nonce": "0x831e7e5c72cfc43561be672eb8c0ec87e3381ec3b3a9983ccbcb3132a6d676ff",
    "signature": "0xaff3622e11c98f9d1e11a2f9ef96be6a02f1223c8072347274af5042264344dc2638c20721b71a575c607e37d134410f50bbc3f87209e4a3ea36ff05ca59966d1b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}