{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4600",
    "entityType": "User",
    "nonce": "0xf9d50e066fb01fc787e7d48feb0c75d7c6da59a507b9f134039e6e53bedd5fc4",
    "signature": "0x11278dcdff452a25f7f41ebbeef6a536d794a761653f8e53dab3d2662d12b10f35c6ff15bb23ee612711730c3aecbab30925f1556bd34a1d9d7d8f17bf0a86cf1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}