{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x893b6fc5cbec4bf897bda3bbf10367447937bc003b09118dfdfe24136428416c",
    "signature": "0xbd6f649084ffd08082d2f8e7def874a56ccd0122852ba646513fb14fdb33549845a790df7829ac153f3c25a41c29044a752d35c88dd53affb66bd1d21cd0a86e1c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}