{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x90323d2e2f3762ac3e072a0ecbfb8bf044ae4a15588565810d2ef7d6fa5562e8",
    "signature": "0x4280e50ca53992c04a62e68ec9070773b620b1fc4a3b8996a8f6ef9993670c18176a793bfabb923299e7d6ed7cc56b566236b7576c71ca9ca00e63c80ab4ebb01b",
    "signer": "0x995Ca8f2d3956487967aCfd7EA849313C448c3a8",
    "userId": "227564"
  }
}