{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124",
    "entityType": "User",
    "nonce": "0xee3c80a115c613ce5809996cfb44a4619f3901cb5c91702a9c7529d53988d8f5",
    "signature": "0x02364b394daf9f0863562d53d6d31a777f68d4c1b48c05e4609e609d15b84c6c26fbab8b72d59e0fa97eec8d5ccb118d291a0269727af276f1b84501eecde1fb1c",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}