{
  "manageEntity": {
    "action": "Save",
    "entityId": "1726967706",
    "entityType": "Track",
    "nonce": "0xa05e4dd6fc8897ed0b04df112ea223447e867924104858b3e26b593419a7c47b",
    "signature": "0x7ae45fb3b6acfe73639f08f3dd4633fe2620e8f7988f1165dcee3e0adb3791ff1dc65eb3ce9058ad63971a0de047ab4152615e55d41674ba6b0bd14713dbfaf91c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}