{
  "manageEntity": {
    "action": "Save",
    "entityId": "368632220",
    "entityType": "Track",
    "nonce": "0x6851a81a5ae6681c164d8c832050205898264fb8248ccb81f6ec92b92c591538",
    "signature": "0x021e3c545bbc7d5689a51f2f31257a8f76cf3d6042d0c1df440228696618b964404e909351311357233b49f53e8183434449553fe1735a9e75999087ae7ad8dd1c",
    "signer": "0x02874c076103f0CD6bAAFf4BB02ce96Ca3e65A01",
    "userId": "623024495"
  }
}