{
  "manageEntity": {
    "action": "Save",
    "entityId": "1535159205",
    "entityType": "Track",
    "nonce": "0x6422b7e31fdae65463294012d7996c77a2798a090c64ccad9029328e35ff5421",
    "signature": "0xe1448e1c19f71281dd54b652675a8cf18dc5eb116a9a49cf9c1a9057000ef4b25d3c1dd47ba9080d0f1b08d997a5e06e2fdf634be899f4882317ffcd52518d071b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}