{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0xcacf959c34cba125539488db7218ff763bbef22f638abf3e53704cf8f9d0e84a",
    "signature": "0x53404a1f6e7ee398ef1d69eed4cbfa0ff2611801668f14e77d594bd28dcc2cb77db2ea45b0a84e98fa5ba34ce8b6ca609113f9bafe4f942e08c38dfd20c8142d1c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}