{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100011",
    "entityType": "User",
    "nonce": "0xd3a334a95c6849a1a40dd7443e9e7f1e0f094c7d7f506d649409c3c2e105f5a8",
    "signature": "0xc9c9f9193233dc3581096953c9e72b46e67ccd8266d41309773b196ba7e353c45872e878dc6a57fe53413301fcf4fd40379fcf998c9eaae93f7acb2371167a951b",
    "signer": "0xaC5cce7598F0Eb17aaE90fc5c8221B0312d77aFb",
    "userId": "329521655"
  }
}