{
  "manageEntity": {
    "action": "Save",
    "entityId": "1046629906",
    "entityType": "Track",
    "nonce": "0x49023a0925bf3e9830be0a98db7afc51ea06962b1d0135ccc57c1856bb8461d6",
    "signature": "0x499bfffb5d33b3d988f7cd4433c6f1fb9cd20c067873389fccdb97a8b468b705639d24498024ed8d65ebb63f403354639d9660406b80e5dc2fc341d2d49b23a71b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}