{
  "manageEntity": {
    "action": "Save",
    "entityId": "126711",
    "entityType": "Track",
    "nonce": "0xee56c693ce88f8d71bcf54fd5f59b6595263f18a717506bcfb90143e665ad951",
    "signature": "0x77a25e709b60f3ed6ef5c892619f94d093ef0f871d43f2591f31a67ebfc2376a5ec5314f5380f1e69d25758b001308172d55e886e7d1c6a3f2c990206a1eb5a21b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}