{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1f8471e7d524404b89794a3e8fb1a2aa34a62c589d973a15c12791ee7702b224",
    "signature": "0x2c8519c2c5f90456c628ed4e0483b5740a31495c6eecb8402002a3838e3074701df745a9d33d124f8502b9be0216b2831feadbbc0216e3b7c6e488c5a09311351b",
    "signer": "0xD55D966a5B1D2ae3c7E642B79A648625202B91B8",
    "userId": "223852376"
  }
}