{
  "manageEntity": {
    "action": "Save",
    "entityId": "1186061177",
    "entityType": "Track",
    "nonce": "0xeab72abaf08aa516856c3cdb72d8dd6f04b3cf2cc263833a976d54c2b65f6abf",
    "signature": "0x064a09c976bf88ac1d15d5f08c5b97f0f59e38b3df2e8574ebbaa572652c61362d250bfd695688c0f93f17c89d7c2c981c4a64f5c0edd50e66c9e059a93c480f1b",
    "signer": "0xB755CddA6da08Cbad290b9528CD0dC860f9f7dd5",
    "userId": "536791428"
  }
}