{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x7bbfd982639d674dfe3a6131bee1bd97c0b135678418125fdaa07ca3d453bc9f",
    "signature": "0x1492e77bc8eb0187decce240c3e9bc920645f723f069f8e73c189e22363aa05768fe4163488ab952599818d537aa901abe8ca57d7f30014e7d676378fe4f26931b",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}