{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1439165",
    "entityType": "User",
    "nonce": "0x021141b9ed4b3ff1b87b355c7292ab6286f7c7ff9d6fcd9bd8fa23bb6be76f9b",
    "signature": "0xef5de4d6d175cbdcfb73d6348af6711d465c914b6557b6a18d52f57445d6b7c87d6f4813b7531db200d467c74d7b5a9319e2d5fcefc8b34221eb8cbc653787471b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}