{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381571423",
    "entityType": "User",
    "nonce": "0xad71d618782560c5e9663c0998fc7273a4eb2ff006a69de4e7a87e44fbd88a35",
    "signature": "0xb31f65346015c82f260dcd8ef1a051caded144a6353c175aca99de76c5f2be2f2037415ff363957a23fdc725691cc3fba6498be6148fc2a4ec34b10062cab8e61b",
    "signer": "0xF7F56DF4D8a2Ae2BF9Ca645DC684f84c37BbDaFe",
    "userId": "116272245"
  }
}