{
  "manageEntity": {
    "action": "Save",
    "entityId": "1288040344",
    "entityType": "Track",
    "nonce": "0xf5952f1e0540fd2f9cd0c33681aa8c68ed7e0df89ece393d379b3e7aaf171913",
    "signature": "0x655bc11439a78068fe4177dcdc9de90fced9bf40a935a881011cdb354c0a745b766931e1443ca9b2d652eb2b5afd8890775eb525480a3dc00994edb6c3f2febd1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}