{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "429591",
    "entityType": "User",
    "nonce": "0x726057332ce5485b472c65b1f4a0d0f7dde2a486b668d3af74f487ee1cc5cc62",
    "signature": "0x811ba30ebb8a33adf9699de7a8922ea4f42557036732c607a65316df66b4e9ba18711f9aa3168a22c3b37aa97727675eaea09bbb07ca150950fcbeba132742b41b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}