{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "367647512",
    "entityType": "User",
    "nonce": "0x1d853385de1170979bd7c6fd950e2060dcdeb976de8207da74ac85db8bc304d2",
    "signature": "0x79024644a95ec66edc74e33753c8b4007b589d073533c36675d588a31160d9744aaf3c2b8c733070a994104351b2e545f1dd163526e92162b81762b9211532621b",
    "signer": "0x21C9b5409a415E4F0923C5378a82C85B8dd3467f",
    "userId": "575912766"
  }
}