{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0xdfdb783fa0ba76d1f7ce5b6444077cd04969479425c4d67b273a28a7c4071caa",
    "signature": "0x1c066c5daf94b306af349d6aa516017a8eb9b41b9bd7896fc468b8b95390064926f7e78100ef1841ea90d7ba9a3bbb5d72edb480130f4c51973c27524df66eb91b",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}