{
  "manageEntity": {
    "action": "Save",
    "entityId": "330801774",
    "entityType": "Track",
    "nonce": "0xdab6bbeda010a657cd66511c55c54b382c5bcb4cdfcc7dbf55e12e3777c16eaf",
    "signature": "0x96d17c1f4ffa3461cfe41b6f6aa3921505b635c18cda882a0c608750bdad0bb263175b10591743947974e9ab8c9e2f3aeea2c20f3c3ab30affbd8cafddf568411c",
    "signer": "0x2c232E026B83c9880E3133769a08b5951c0b6C75",
    "userId": "713107840"
  }
}