{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "45699",
    "entityType": "User",
    "nonce": "0xec8fa08a4c9bcd710d90914ece85250fcda68b60b7a63d5dd39c414c11ac0aa5",
    "signature": "0xc14799919d34d0751e97d90a5ea0b670bf21cc8c987207c9432e8391470b7f4d3cd8e79e4acafd632d29f66aaaba183446b6d534e6319e095060607820d1c6331c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}