{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341554118",
    "entityType": "User",
    "nonce": "0x2faabc0d7298d3768e384d04d11e46bf19401f0f0f23d28d564594d993efa838",
    "signature": "0x3781229438f18d4bd8a9b0fcb7353a20796fd188a4f2a0a2d393639d686182c4544b49c0340f8972195a3001f71853ab51413d283b02053f0dc515cc84fbe4cf1c",
    "signer": "0x75Da3C6dD4bBBbe11CB9AcF70B6cab12e8208989",
    "userId": "432267938"
  }
}