{
  "manageEntity": {
    "action": "Save",
    "entityId": "1799472706",
    "entityType": "Track",
    "nonce": "0xe0dec175b30a0c0e8e7dcb0ca29759e236b9070dc53977637ce5e527bbd4bbd6",
    "signature": "0x6ebd42e2a88dcdee8037ea47be963c57a501ba06b92a9afef63279447329fb411f357b2c42925fdea76bc79dbc0dd38a290276a94e976ec15867c96358425b0d1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}