{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "976719636",
    "entityType": "User",
    "nonce": "0xb6ccea0ea3e5577e3808d5839d11b15746be624fad3bbc7e1f121e3338e2acba",
    "signature": "0x421ee775e215da5a0df82c4f478f8cddc4f20229bdf923dea9ac6c2f7f78a1e700eaecedc0e3c4b4728de4c87e6b4066bae7aa2a48aad4fc754921bdc8bc25791c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}