{
  "manageEntity": {
    "action": "Save",
    "entityId": "35380",
    "entityType": "Track",
    "nonce": "0xd8f8a204d5ae18f3e89f98d2dd6bb38c9652ee71cc1ca4ce53eed2a78c6572a9",
    "signature": "0x542e3a5341c24a9fb1e43bd20cebb86ab51234fdc17207c6f786d60b4a7e7ffe31376e64f4306b599561b0a5070a17f59257becfe582454fc206fdd3a89704451c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}