{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167472249",
    "entityType": "Track",
    "nonce": "0x21f510eda8e346d29776e108e67846b01ca4eadb715c102bc6cf425e8cecb75b",
    "signature": "0x4d21f014a8573adcf7d0997dce265781982568875f94702af1657dac763fc1622b9f7f5a583744a429923118d5e81c6da1b2f92f6a54491b22a4717acd9ae0361b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}