{
  "manageEntity": {
    "action": "Save",
    "entityId": "1711975880",
    "entityType": "Track",
    "nonce": "0x033ad1e93af234bbab8405bb172ba0cd2ee89ce20c0e346ae71e771ae694ee88",
    "signature": "0x0234d2c457fa6fdb9473e0e400912875cd2ab98376beb3bee8ab0cdaca8cae80388be250712ea1b3c904e3b1d5ac9f2480df9935c7f3ce1ad5c9f4eaca0cb3da1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}