{
  "manageEntity": {
    "action": "Save",
    "entityId": "17142888",
    "entityType": "Track",
    "nonce": "0x95636192cb313e7d5726c4d0e0e282746533e7eb00904bf3c949726af4fb9d0f",
    "signature": "0x9e3922e2d21223910a14f01331d17b9fdf4ac720409f67a2cc9dc514e62486ad00a1cf441f6c0562f86387c50a82af576cf56b8c939db2a73cdafb9ae26276711b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}