{
  "manageEntity": {
    "action": "Save",
    "entityId": "34013946",
    "entityType": "Track",
    "nonce": "0x8a3c73ff740af24fa977146556ed156654de4437b077a185007bff12d91fcad8",
    "signature": "0xccd32393a3269e39535de0dff86e63286f0b968bb1b610f6d204826220b956f0565437cb7f4cb5104e1f91d2927789dd25347e1dd72c369665ec9ba49afa69d61c",
    "signer": "0x44Fe9338D9d1405927C73FDA0be0F36ae481Cd39",
    "userId": "983568397"
  }
}