{
  "manageEntity": {
    "action": "Save",
    "entityId": "354106710",
    "entityType": "Track",
    "nonce": "0x371711cb3fa391c28e95b2489feebb937e7678f823413ff929f50d98635c4337",
    "signature": "0xe0bc87dbdee064cdaac32eb7b8835410a16369e632788cffa6ce601fd4161e272a3661c1885a81b20babda6f3df5b088dd7f3ea8edb3b0ae87616caebf32a2aa1b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}