{
  "manageEntity": {
    "action": "Save",
    "entityId": "52363001",
    "entityType": "Track",
    "nonce": "0x2f77ed27e5909193521e9f3d12e36458156cea56eabaa56969440156125cd177",
    "signature": "0x13bbb9456edd7252484d11e1f9170a7bb4040eaf8a6fa31b68c07a8900108c5c0d6d83b7ee4aa5470078319d06c65af6a1fcb3fd824eb92e759a15bd8baacc381b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}