{
  "manageEntity": {
    "action": "Save",
    "entityId": "1170297769",
    "entityType": "Track",
    "nonce": "0x080e312a650998d3eadfc68b128aed96963992b8549a2d49d6924424e6876b19",
    "signature": "0x99a87013f79f1caad25a766c633c8c9dc853f7b3dd266e89ab8da924db6b60d64153c71536d179d7ba413a6042b8f76633e70199d2e6667180cead0ae909944d1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}