{
  "manageEntity": {
    "action": "Save",
    "entityId": "2051629886",
    "entityType": "Track",
    "nonce": "0x029baac2fc886c0b461f45a0b3eea809416c0646f562af201ede518006398259",
    "signature": "0xb703a8f84ce5605f0dea0611a262602987a2692f48a878f4aeb0463bb3e9791e442aa51f4dd2e3bac6720886eca5aad0cad968f13bb858383a121e0acc7f1b391c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}