{
  "manageEntity": {
    "action": "Save",
    "entityId": "356088968",
    "entityType": "Track",
    "nonce": "0x2300b5264607c2546e271d9109a8dc3735c430ecbfdda02544e26d2dac01d4fc",
    "signature": "0x5c8a8fe67c6a35576a0012579c645e969ce052da0bfb8910dbed8a15e0a38469411257fd3bc662ceee49ce761e83eafc101baef6aa6436cc3d3061d65bd69fde1b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}