{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940003920",
    "entityType": "User",
    "nonce": "0x45865c23036c5ded594a37921d8fa62d36130bb34a78f9d19478563e6f57004a",
    "signature": "0xfed7c420525eeee2ed4a3383bf6103c02f083f73190de17f73a890daa035a1365adb10e639de0e5afb161a67901f0caf1e58f046989497e78b25269cf6a516321c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}