{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1104",
    "entityType": "User",
    "nonce": "0x21cf8818e799d4677323de3203e6ac35da8ad9a2760bdb0b9a7c4c76616d7189",
    "signature": "0x67c9f9543108bc1fc5cc31e8dd483b965bc4ff3ab7346692d595c1f52ff5b30d2502abc8b3e836468535019db981f53bc8c074253e34a6dcec2fdb9a521fcf4a1c",
    "signer": "0x607D26fCBC981BBf1f9b7a1ee2EB8444b128239C",
    "userId": "68884680"
  }
}