{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167704803",
    "entityType": "Track",
    "nonce": "0xe5c9b4d459db48a5f4507cf77c368e1935fd54ed39cd70088a9e2a7ae8b721ec",
    "signature": "0xaa7733a1bcd6f6aa91fc6a71d41331cc092d21c6349f107351765aa42840ff2d55e16dcadf74189bb4198d9b2554ba2b9a3ad7ee6700aaf5b4e36d0bea9c02c61c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}