{
  "manageEntity": {
    "action": "Save",
    "entityId": "1479239307",
    "entityType": "Track",
    "nonce": "0x41fc5053f45f7d5e60069743f4121519da1b9a08187b136811e7a6f0219b0cd9",
    "signature": "0x04dead0ea822e4adc9d9d7d5f70d167e12dc686bb321141a09668de2825dfd1864e27b497018a450dc99ab7b3a496ad034102cb055807354d95af0d771a1aa051c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}