{
  "manageEntity": {
    "action": "Save",
    "entityId": "81272",
    "entityType": "Track",
    "nonce": "0xc221955196608c67e6c338c26d6f40c7445de852e820117ac0b1263573c38aa0",
    "signature": "0x0130ac7020de5bb695a1602f62fc7a93290991e3ede03e0faa4d7385c14500f27039d92f501ae4f7884944bdcbcb095b767949467d5fd850845d5711c35668471c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}