{
  "manageEntity": {
    "action": "Save",
    "entityId": "1514271106",
    "entityType": "Track",
    "nonce": "0xc7dbbcf40e081f7615be7e4cd59b8a891186a8a2b48089aded17e9c02c13b6d0",
    "signature": "0x31f7e11cc3643b625a926b1034d725851c025cd36ea666e1741f8841737afd0a58228683f62ae4924a03f003be71b965ec2b6d9f7c6fffaedf31128702c4341e1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}