{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "486490947",
    "entityType": "User",
    "nonce": "0x750239b9168f12be3dcf1ed9eb2184a4ebe05efbe625e4f60f6def2103371319",
    "signature": "0xe99fa43ae8a8dd85b168f037ddbe879fa876696d519a37f3122a999f7df165cf0fe7eee0a70a40e35c36d7a241111c7d3fdb7754f20f2a8258668f90c2a60a861b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}