{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "37200",
    "entityType": "User",
    "nonce": "0x196f061696b90d51f2734a960cc485e2effe538382962c3b879c2aecfa358d1a",
    "signature": "0x732d3b4a5bfb1fa66009ad65219f9451b7906e8e903dd48d040e9b5b67446a8463292a584bddce605db710dbb14f55f869ca7bec6da59f5589d14a5767bf0d581b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}