{
  "manageEntity": {
    "action": "Save",
    "entityId": "1861784985",
    "entityType": "Track",
    "nonce": "1792357594670297550",
    "signature": "0x25d2c94e24daa6fed7fe70911e373ed95b19c1a1e17a9f3a00d16d99962858085eeb0aeec758fd05f4c7152f45662029e3fc067d622ae7817f826b02e3caaa521c",
    "signer": "0x9B241b1a6A99d662AE67D328e091Fc94faF23fdc",
    "userId": "881446128"
  }
}