{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1739285",
    "entityType": "User",
    "nonce": "0x413d9fbea13599fb69442e0a15c6d6cac7265b47042dd46fe073771d92c97234",
    "signature": "0xeab0fd45f165d49551ec5feaeb31f5d87b26140fe45700d5c93f4a4abcba3b4031302befc0a052301e4cbeef145d37418a89d636c7f69b5f5c7e0988395e37581c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}