{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "740883",
    "entityType": "User",
    "nonce": "0xa47f5b2f7c879607298f91ea5a376fa63804bbfcf6094c3175851374490daf00",
    "signature": "0xeb73a23564030b1702288d40563d14b75b65886fcf44fcd5e76673a4f21042866879868b5308678827bafc45fe629d628e048c764f11a0306fd796b2cdea97b71b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}