{
  "manageEntity": {
    "action": "Save",
    "entityId": "151092651",
    "entityType": "Track",
    "nonce": "0xba21a535257bfb707da13dee9ebf899c2c28428711a7719adf459e1b9529b981",
    "signature": "0xe5719e79fbf6607d4b599187f8f9f036b89c6737989eadda6db9d7ae3e80563a690688c3cee4dbc25e4dd488d598d5be4455cb710b5a62a243e18bf4adaa01521b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}