{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xba3d401773b69abc021246f615769a080fc1b69e02fa5649db57339f3d8a24ec",
    "signature": "0xe3f4cdc064d99d9af2e20f734243c2f597c20b1513bf41ff86b7d9e853a5eb8f1d281c8bf02c15fe5cf18330c8c5392f610c4a33eacb2c21bdc77cc7d7dc52ec1c",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}