{
  "manageEntity": {
    "action": "Create",
    "entityId": "66796890",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Nice track \",\"entity_id\":1350826306}}",
    "nonce": "0x971a2ad836cee291762d95b56861a96bf24e24f9f88b7a17a0b06cf3fecc0854",
    "signature": "0x0892ff4502317dc50ee78010abfd249e6c09b77f84b6fb5436a93e4d75b994a3471992e1842760437d102eb8ca42db3e7827e134b8ae6a4d3c74088a32e517401c",
    "signer": "0x375963f281CEdF4D9D180496F80A256D574daBa2",
    "userId": "981824750"
  }
}