{
  "manageEntity": {
    "action": "Save",
    "entityId": "1989185835",
    "entityType": "Track",
    "nonce": "0x75c09961f4a30f165ec4aa8e45c40373c34dd4e86b002f215792b7d34b43a2e8",
    "signature": "0xfcbf46b522ffce13a08af00495b12b44204e4ee316c931033c272bd3b964263e0eed75907b79b4105efdbf40c74bc3a967b5b4e70f137079a737bf7b4191614c1b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}