{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "301637",
    "entityType": "User",
    "nonce": "0xc86466a70f1fefb5efd0438da45cc0bbfc4d12877cb07ffc2b84b20d6902e96d",
    "signature": "0x4e58d432659d7576af61f7eabb5114bf9932c2863cf1b43f0c82d2f2155e7cca0ece889740dfb36b186c959f77a5733fe03223275de7de698a79b7220047d6881c",
    "signer": "0xa6537b4A64192585E782889E1230Cb8E13E01fd1",
    "userId": "154253595"
  }
}