{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd8a75340027ff02d029d4e1872bc44eb8d07d8e182aece6a4f262bf8bc6cfe5e",
    "signature": "0xddfb134d15c6f638e26ac760bb2e94904bcee422bc45cdfd664bbda19485126d1e35d27415a4dad196a0aefc5b429c57aae2d4a1c73e1a50e28edf7d9bdb02421c",
    "signer": "0x715aC89F33666691AD0BebeB284C380aBa10caF1",
    "userId": "700531368"
  }
}