{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174894112",
    "entityType": "User",
    "nonce": "0xf94bef4f6ab8ebaba3b1af3a47b6bc2d42b7ec06518f76fb5c043bf81c8b7808",
    "signature": "0xc3e6d46e51fe1094629d08d0e39313b482e147fb1581e6a39d6f3b567bf1af14570376bbb6bf840a28fb3cdc46644185d9c2326b825a0ba3641fbd5297f0afa81c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}