{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8f207b6aa4bcd00ccb4c59b29bf6cc162ee281f4e1cc6d4257e4b4691c81e54f",
    "signature": "0x311aaa021e67c8278345dfc72555edaaee6a4c4b3cfafcbf9a9de797e9c0523f6325064f5fb88334925d31d8b8a87627072d6d8a53140bf75626a2b7ad61df021b",
    "signer": "0x07024945569e5721E4d506B01fB850443CF99F65",
    "userId": "871280797"
  }
}