{
  "manageEntity": {
    "action": "Save",
    "entityId": "2014450940",
    "entityType": "Track",
    "nonce": "0x68af4b6ea7ba77440905ba0d4dbcf7a14c1cfca44d74223b3ff7c7915ada7d35",
    "signature": "0x204c1616b42c24f17782fa6e69a851c5716c79acb623f204442a7eec3da1af4c285c351f4822422a400a1a0ef778bb5a8dd1b4ed6611c598499f83e9c34e780c1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}