{
  "manageEntity": {
    "action": "Save",
    "entityId": "466012251",
    "entityType": "Track",
    "nonce": "0x8aedebd00cc79a8b7cfdfa79a7794a5f1f39156c1bfbb7b602340c6a5eed7a04",
    "signature": "0x6de6d1bf872f0749483d2ce019c04135c93df3a20c3593452e1a3901333877cf38ba23e1714c5ec82e1e1e5db140b612baf2bb15a9cbc20fa5be1d1f559ffac61c",
    "signer": "0x0e08C058dE1787206F03B99840c282498259E9C4",
    "userId": "589495545"
  }
}