{
  "manageEntity": {
    "action": "Save",
    "entityId": "142660",
    "entityType": "Track",
    "nonce": "0x9e32dbf72ffec29aa5dccd190a88c00d5490e413f5c0ec6db3607022d92fdddb",
    "signature": "0xed736caaf9739f208b91796219525a57b42c4e97d7245c2a6baf2d2fd561dc1170a8302d5cb699fc71f37550d5d987b34ba7abded54b2801104fe064d64e299c1b",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}