{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "783252567",
    "entityType": "User",
    "nonce": "0x281002ec7abc2671f3ba00913f021245685a71f515b9892a88b4202e82f761dc",
    "signature": "0xedf510adb36ad678b2926b1a0f835f37d628503401940b92000ea1009ea181764f3b1937a5955cb72f37f3e3459c8ad45caaf9fb68911036ceb7e670beee70f51c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}