{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "377610060",
    "entityType": "User",
    "nonce": "0x8ed59c6829c6555121a83453f9eb0573a3c50f87116146aeb750ef5ae741b10d",
    "signature": "0xef8ffffb17e9c7e60ad6d34dedc922a9008897d33f105e9548f3e5b87c279b171361f323536562abeb49917dd39a45984e62a3420dbe4c9d4e533c1be0f7c9a51b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}