{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620449233",
    "entityType": "User",
    "nonce": "0xae6c36da3bbd8027a25369b1c66f3ebe17a9d74fd87e6263393fb383f3a83694",
    "signature": "0x8b72ccfe33f0e40ae3eb9eb8be3498b13b2d97afb5969a115ab743efcbfeb8a8308840b3ef40dececbe67104a79f396078816863996de42b28b579651aba3b501b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}