{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "555449794",
    "entityType": "User",
    "nonce": "0x4094826c6266c8e25d1a46de30ba234bef71cc16187f30b29ee424052771e99f",
    "signature": "0x2b4689cca306e582c716a03a44c52ea7a3aa33298c70117043b6914936195a2123363dc91244f809d25afdd160a5bda0c8e98fbee9267f9256b4c1becaa634361b",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}