{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3b5cd63e8f191bbc96062a4797415e12e72dca80a441809a058efc4924646b05",
    "signature": "0xb03d5680fefba308f5f38ce65298024e249f24736b01e3993468cdcff10f0676539f785dfb49c48a400b76288a67f55fff08049737eba46e9db8c5d0390c732b1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}