{
  "manageEntity": {
    "action": "Save",
    "entityId": "271779218",
    "entityType": "Track",
    "nonce": "0x530433ada6430aa96701c27a40f64643c883d91c29f90e20b02bb7c1603d3b78",
    "signature": "0xbae113e768bdf4e12cd1cffba0a2626509d5b664ed60a0e25c867f4f3675d70a420f46c01044e0e65d2acf9d740694285659a72838a6feaa55e5623f510a55801b",
    "signer": "0x6802Fe39C5FA9f99ac1Aa32F164982185A3E70ea",
    "userId": "152482938"
  }
}