{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "678556080",
    "entityType": "User",
    "nonce": "0x0e65c6ae2a7ca95afdb4152e795993d2e5d3df1bd45a17acefe4807563b7d06d",
    "signature": "0x6e27a17ad49cebe4120e76677bbddd5130da47ba1748ef44fb10cf6947e760be37864e673af36cf2eb18b1a64790700a6fb0d703ca33d1a08a259a65e4f2f35e1b",
    "signer": "0x20690bD900B04126EBFAF3620E46F1645188CD62",
    "userId": "16326"
  }
}