{
  "manageEntity": {
    "action": "Save",
    "entityId": "1714790064",
    "entityType": "Track",
    "nonce": "0x65889cd7b9e3fe6b2e56f4b5cdbb5328acbafdc0410e29cc3f9ae10f616b07ae",
    "signature": "0xea2f0ae18d3ababd53e1658de536e4bfd1cc252f109dbdb249ad87c8a4a98fb540307f30ef27d416d5e1402a3737697e2294b2a10a8ac2b2bed5345b4540842e1c",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}