{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "103106",
    "entityType": "User",
    "nonce": "0x9f13b06ae4ad9d59366f3ae202d1e3aa86f192d557883816d907ec6793d64f78",
    "signature": "0x7de3f38643d2aacc84cea29d4903936911336bbdca620170e0554d573f3e5a6311ec5b500817a9a639fad95e9fbb7bdce627fb8fdc5276caa537c9f31000c91d1b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}