{
  "manageEntity": {
    "action": "Save",
    "entityId": "2006395403",
    "entityType": "Track",
    "nonce": "0x9b3f78eed843eb4ddf6cffa59c86095c27948580d23f3ccc199dd9a5b6ecd6cc",
    "signature": "0x8df0898f30ce58c2d7ca79c769dad79c1d261a713c5cc6f3923f74b34ab03d0f65499c1b3a0ad2ef40787bb3bf744d5b1f43a2a37a75e16d11d678fb9b6258801c",
    "signer": "0x0a5148A3f132E6696c1Cd3FDA8465fC5fF17d3D2",
    "userId": "803288761"
  }
}