{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12960",
    "entityType": "User",
    "nonce": "0x3d1a7e06f7f09433adabc098746e0e700ea9aa25a2dcddb3289ca5f3b43a19a6",
    "signature": "0x1101e1f64c7196b70b4b8985702566df98829caf95b81f38811337233147c9037c502e4fbb0a1b3737ce389a8a65b3eea3a9f7850dfa1ab5c98c3ea20da46f671b",
    "signer": "0xf955397B294667924e7Bb7F0242060CE42339111",
    "userId": "142071420"
  }
}