{
  "manageEntity": {
    "action": "Save",
    "entityId": "61700366",
    "entityType": "Track",
    "nonce": "0xa238d93a558501df910fcfc828284fff19f92fb960b1875d45f1de9d9917e637",
    "signature": "0xba280f6d5702cf25262458ada9056a31615df117d8e9b1b749bbd614b62078b524e24495ad149d85f41d3643ba00ba65801ae589a9b2ed8862b6ef1554ddad491c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}