{
  "manageEntity": {
    "action": "Save",
    "entityId": "1157563672",
    "entityType": "Track",
    "nonce": "0x182661eca1e1ffa52aa48333c57aec0605ce48885d0322ab64de35ecefda5e39",
    "signature": "0xb637cb9d414a39121ba88699ac364b734710a9ac707a79ddb786b7db1755c7962da3fdc8c1d12a84fa9a09c682e7386de2dca6b25007d9d1fda32a26398d2b031c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}