{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "239411",
    "entityType": "User",
    "nonce": "0x714ffd1c20e992c38b121a075fd4661240b1d81d179a9c7ad3d038a4ccd1c100",
    "signature": "0xd91fddbc1dda4d823ea7a1bf27eabf9f9109a31cb68a95d1ff7f3fde5e7ae55010a7c23f0c602dcb2fbf9d8e58efa28a214bfb191d0aefe1af6c54f6b8a80a921b",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}