{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3848",
    "entityType": "User",
    "nonce": "0x7c16c9475a68dd0ca4877582b36e554fc76eecb17830710524543986ebc502c7",
    "signature": "0x1d2ca74891c81c2a046ce442f2b8306200608844cb6e4a9fceb5d4a64f601bee4d37d2b18e0ee3effc6919f482aaa1bf070c2d3f0b8c1ca4b29d2ec019e6285c1c",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}