{
  "manageEntity": {
    "action": "Save",
    "entityId": "1282238934",
    "entityType": "Track",
    "nonce": "0x746e935968fc15bd0b351583174b8cfeb85299c7832720b64663a66a1119edf7",
    "signature": "0x3ac26d2c039144889374004a4eb9a131937c05a2b5d107a7adaeb7905d3a133732d2dc0447d984f1b169efc0ceb5dc44e558d9d985e32ab8d407ff7597e4e4c21b",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}