{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xaa362a6a1567a0e7dc41ebec8d9fc68a3af92573c156a907c77c856f48654404",
    "signature": "0x740eb01b8371f0ad17072a36c83b17c7c345c11135bf924305e3b6c97988d1161de7c7fafdf24b36fba5dabaea8742278c045c7167e213f260a288358297bdcd1c",
    "signer": "0x28338613294328E011543D25D5c1c4E8D2DfE382",
    "userId": "163746342"
  }
}