{
  "manageEntity": {
    "action": "Save",
    "entityId": "114288",
    "entityType": "Track",
    "nonce": "0x93543e41fdb56c5c65b10b0acc02b02aceee0ca20a7a749921b9788c41266f1f",
    "signature": "0x9781a1ec64e77e1ac225b90735f87da28406cb678aa2de0f7851a1cc87e2c1a9541c7b29feb8c6dce64cbb0fe96959917f748f252658a5ec120376766927b54d1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}