{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3575",
    "entityType": "User",
    "nonce": "0x337e4ea147798f5f9e78f61be60505d90f248d187fe59eca6563079be0247319",
    "signature": "0x6c8c20ea54319174ddae756d98a942aa1fdb786b7b2246b83deb0121d32c611430d0d496bcea35f07405ecae752b38fabdf6ca27b7f7a8e78b8e6fce4f5472301b",
    "signer": "0x5617e33979Af319eD3a9a6bFF820d69b7e8877a9",
    "userId": "171261"
  }
}