{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "563832090",
    "entityType": "User",
    "nonce": "0xe310b8f540f2be2c5e9980cc714895923871924711b87be967e0bfc503f9dfce",
    "signature": "0x3954dc6aadf09557375fc684ea64c983763130f7b6ffdaef58427e6ffb5916790d494cb770176e988cc23087b08c7974ecac585b45c49303674626d84d0361981b",
    "signer": "0x3256Bd2D0B1984E7df4FA525017aD9bA48470760",
    "userId": "51"
  }
}