{
  "manageEntity": {
    "action": "Save",
    "entityId": "695484763",
    "entityType": "Track",
    "nonce": "0x33e3c77458562a20f1022cfd2bfcbbb016685b9d06086d0a6a7dcac153cd04cc",
    "signature": "0x8ce92712d0912860080b7dd70f5bbf8ad2a4840142055b5083880dd3edcf372e462623644a28d872341ee28b0aee464ec16d293598fd659297b026d36257ba6c1c",
    "signer": "0xC6f6979d7215C4611Cd7aDb30a42B2812294262c",
    "userId": "55290787"
  }
}