{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341",
    "entityType": "User",
    "nonce": "0xfca83bf01903fb5f631e3c5ba0c5dc39d5e356a92ee236a19097eec0ad52e3f0",
    "signature": "0xf843d79027e5fc33d3aa4065c7acfd36df45d7b735c7b285312f5135928c926225f49cada6badd57b95f239b725301f4089924734dbdbb7ccf4f9b069ccb638c1c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}