{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389958",
    "entityType": "User",
    "nonce": "0x97e2bb8032f9e07f322d137228db90708255f6a364a9d00c97e4a8b01014435c",
    "signature": "0x879d8882fab7737ea46f6fdee0f2204623a292a8ef734f6ce160b75d03a156ff06eb02cc98f7218c9c067acd2777c975f5a67f5fe8d7dcbc2e773a7171f8f3641b",
    "signer": "0x2Df83D15c880275a0138820cE2009Fc85eF32C65",
    "userId": "107618708"
  }
}