{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x438a7ea1274d952ecd4b6c8d523efa6434986109fe75d490620e99883753a8b3",
    "signature": "0x8f3e784416f2345100617eedeffac6e546768de3656fc5d4f0f737c8b17523fd4896d43f0a0a3004577166fd3ac9e23a7eea35abf8d5787b14c7b773da296c731c",
    "signer": "0xcF7E6c02DA882ce2DA8a97BE0e9eE2c8c33C2675",
    "userId": "681323125"
  }
}