{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8f66c4e8eb1592e4f0ad81434ec8f159f5ac595661dd3df4402a0deeca12c50d",
    "signature": "0x06944bffcb1e564d7838a7cb58cfc5732ea18cb7a864331db596656889c0c5631218f0208043c16cfe4ea4c545e185ba4faac26782d9fa21613f74a0e55bc32a1b",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}