{
  "manageEntity": {
    "action": "Save",
    "entityId": "324660302",
    "entityType": "Track",
    "nonce": "0x9c06cc64298b31e7bc59753aa69b65004d4bd53eab0c639bf67d2858821b01ee",
    "signature": "0x3a0db3e046cd20c0ec371688bbf85658114ed083e8de5e03c4a1ac9fae63baa2257e78da6073b0c7169fa80a24cbc375f8e61112a4e98e9afcbc1d51036e370f1c",
    "signer": "0x5cd3eA7DcAA86960596227F4c8624063F3B8893D",
    "userId": "215993"
  }
}