{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "135723185",
    "entityType": "User",
    "nonce": "0xd3334c949fc2c69ca56a040ca26d46f0a56be76756f186b12dab1747635f001b",
    "signature": "0xc8d2efee0f4efaf565761a56eaeaa0df342ce6a6ba67b51336667f7ba463e52e347b5443fd0f6b80178b575414bb15ea074f8eca3504560f0f38fde0fa794f771c",
    "signer": "0xDd320Ea9a099A13D44fB85307EafaF14e61fe55F",
    "userId": "820149711"
  }
}