{
  "manageEntity": {
    "action": "Save",
    "entityId": "62372512",
    "entityType": "Track",
    "nonce": "0xcad34392efae00228029b935299c0bd770b44015ddca610c0ab59e0f3bca11e4",
    "signature": "0xa52517b0ddbadc8ddc49eaec382013803eeed8a6c7f1a83dda9f94f7d66280b3413bb905fe2bed9cdce89481af5885fdb0b6ab75c7d198547bc9ea0597688b6a1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}